In the category of Things people finally got right, the following has been added to Fandom's TRN page: "Please note that TRNs are entirely unofficial designations, and should not be used outside the Marvel Database."

A really specific one:
False: In Captain Britain and MI:13, when Doctor Doom and Dracula met, Doom mentioned he had studied under one of Dracula's greatest foes. This is Doom revealing he studied under Abraham van Helsing.
Truth: Doom did mention being a student of one of Dracula's greatest foes. However, this is a reference to Doom studying sorcery under Cagliostro, not a reference to studying under/working with/meeting van Helsing.

How do I know for sure? Because while writing CB&MI13 Paul Cornell occasionally asked the handbook writers some questions so he could ensure his continuity was on point. Understand that Paul's own grasp was pretty darned good, but he was diligent enough to double check things. Having met him at a few British cons, I was Paul's point of contact on the handbooks, so the queries were sent through me. One of the queries regarded checking what personal history Drac and Doom had, so the state of their personal relationship could be correctly displayed. Surprisingly, given the geographic proximity of Latveria and Transylvania, they'd never actually met on panel, but we did tell Paul that Doom had studied under Cagliostro, and that Cagliostro had clashed with Dracula. How can I be sure that the reference in the comic originated from that e-mail discussion? In the same conversation in the comic Dracula disparagingly mentions Doom's lesser titles - Baron of Krozi, etc. - and that full list of titles had been included in the same e-mail exchange with Paul. 

I find it interesting that Marvel has gotten bolder in recent years about explicitly depicting the One-Above-All—for instance in Jim Starlin's Infinity graphic novels and various works by Al Ewing (Immortal Hulk, Defenders Beyond).

Pinball_Lizard wrote:

Having seen Deadpool and Wolverine the other day, does anyone have a list of the universe numbers for the Fox Marvel films? I know unlike the MCU most of them are different, and I'm going to you guys as I know you won't include any and all BS from the Wikia. The only one I know off thew top of my head is that Fox's X-Men films are Reality #10,005, which is explicitly used in D&W.

Thank you!

Reality-10005 X-Men movie & sequels (2000)
Reality-701306 Daredevil movie (2003)
Reality-121698 FF movie and sequels (2005)
Reality-15866 Fantastic Four movie (2015) 
Reality-17315 Logan movie (2017)

Reality-41633 Deadpool's girlfriend Vanessa Carlysle was murdered by criminal Sergei Valishnikov, who had earlier been targeted by Deadpool. After being convinced to join the X-Men by Colossus, Deadpool formed X-Force to protect the mutant Firefist from the time-traveling Cable-66250, ultimately teaming with Cable to prevent Firefist from becoming evil in the first place, diverging Cable's home reality from this reality. Deadpool later used Cable's time-traveling technology to travel into the past, where he prevented Vanessa's death and diverged this reality. Deadpool 2 movie (2018)

Reality-66250 Alternate future in which the despot mutant Firefist killed the family of Cable, the son of Cyclops and Jean Grey. This reality's Cable used a time charge to travel back to Earth-41633's year 2018, where he planned to kill Firefist to prevent his becoming evil in Cable's home reality. Deadpool 2 movie (2018)

Reality-18315 Variant Earth-10005. The scarred Weapon XI (Wade Wilson) was sent after the Wolverine (James Howlett) but moments after Wolverine recognized Weapon XI as Wilson, the time-traveling Deadpool-41633 appeared and murdered Weapon XI, diverging this reality from Earth-10005. Deadpool 2 movie (2018)

The alternate reality that debuted in X-Men: Days of Future Past has not been numbered yet.

Pinball_Lizard wrote:

Having seen Deadpool and Wolverine the other day, does anyone have a list of the universe numbers for the Fox Marvel films? I know unlike the MCU most of them are different, and I'm going to you guys as I know you won't include any and all BS from the Wikia. The only one I know off thew top of my head is that Fox's X-Men films are Reality #10,005, which is explicitly used in D&W.

Thank you!

I really haven't updated list in a long while but here is what i have for other media.

Earth-TRN011 - Punisher: War Zone (2008 live action movie)
Earth-TRN250 - Solarman (1992 animated pilot)
Earth-TRN414 - X-Men: Days of Future Past (2014 live action movie), Deadpool (2016 live action movie), X-Men: Apocalypse (2016 live action movie)
Earth-TRN554 - Fantastic Four (2015 live action movie)
Earth-TRN607 - Iron Man and Hulk: Heroes United (2013 animated movie), Iron Man and Captain America: Heroes United (2014 animated movie)
Earth-TRN608 - X-Men: Darktide (2006 animated short)
Earth-TRN620 - Legion (live action series)
Earth-TRN633 - Marvel’s Spider-Man (2017 animated series)
Earth-TRN642 - Marvel Future Avengers
Earth-TRN674 - The Gifted (2017 live action series)
Earth-TRN678 - Deadpool 2 (2018 live action movie)
Earth-TRN684 - Marvel Rising: Secret Warriors (2018 animated movie)
Earth-TRN688 - Venom (live action movie)
 
 
Earth-2772 - Doctor Strange: The Sorcerer Supreme (2007 animated movie)
Earth-3488 - Ultimate Avengers: The Movie (2006 animated movie)
Earth-5724 - Nick Fury: Agent of S.H.I.E.L.D. (1998 live action movie)
Earth-6799 - Spider-Man (1967 animated series)
Earth-8096 - Wolverine and the X-Men (2009 animated series), Hulk Vs. (2009 animated movie), Planet Hulk (2010 animated movie), Avengers: Earth’s Mightiest Heroes (2010 animated series), Thor: Tales of Asgard (2011 animated movie)
Earth-8107 - Spider-Man (1981 animated series), Spider-Man and His Amazing Friends (1981 animated series), The Incredible Hulk (1982 animated series)
Earth-10005 - X-Men (2000 live action movie), X2 (2003 live action movie), X-Men: The Last Stand (2006 live action movie), X-Men Origins: Wolverine (2009 live action movie), X-Men: First Class (2011 live action movie), The Wolverine (2013 live action movie), X-Men: Days of Future Past (2014 live action movie)
Earth-11052 - X-Men: Evolution (2000 animated series)
Earth-12041 - Ultimate Spider-Man (2012 animated series), Marvel’s Avengers Assemble (2013 animated series), Hulk and the Agents of S.M.A.S.H. (2013 animated series), Marvel’s Guardians of the Galaxy (2015 animated series), Marvel Super Hero Adventures: Frost Fight (2015 animated movie), Marvel’s Hulk: Where Monsters Dwell (2016 animated movie), Marvel’s Rocket & Groot (2017 animated series)
Earth-14042 - Marvel Disk Wars: The Avengers (2014 animated series)
Earth-14123 - Big Hero 6 (2014 animated movie), Big Hero 6: The Series (2017 animated series)
Earth-17315 - Logan (live action movie)
Earth-26320 - Blade (1998 live action movie), Blade II (2002 live action movie), Blade: Trinity (2004 live action movie), Blade: The Series (2006 live action series)
Earth-26496 - The Spectacular Spider-Man (2008 animated series)
Earth-51778 - Supaidāman (in English, “Spider-Man”) (1978 Japanese live action series)
Earth-58460 - Man-Thing (2005 live action movie)
Earth-58470 - Howard the Duck (1986 live action movie)
Earth-58627 - The Punisher (1989 live action movie)
Earth-58732 - The Punisher (2004 live action movie)
Earth-60808 - Ultimate Avengers 2: Rise of the Panther (2006 animated movie)
Earth-78909 - Fantastic Four (1978 animated series)
Earth-79203 - Battle Fever J (1979 Japanese live action series)
Earth-83930 - Manimal (1983 live action series), Automan (1983 live action series), Night Man (1997 live action series)
Earth-91119 - The Super Hero Squad Show (2009 animated series)
Earth-92131 - X-Men: The Animated Series (1992 animated series), Spider-Man: The Animated Series (1994 series)
Earth-94000 - The Fantastic Four (1994 live action movie)
Earth-95132 - Ultraforce (1995 animated series)
Earth-96173 - Dr. Strange (1978 live action movie)
Earth-96283 - Spider-Man (2002 live action movie), Spider-Man 2 (2004 live action movie), Spider-Man 3 (2007 live action movie)
Earth-101001 – Marvel Anime: Iron Man (2010 animated series), Marvel Anime: Wolverine (2011 animated series), Marvel Anime: X-Men (2011 animated series), Marvel Anime: Blade (2011 animated series), Iron Man: Rise of the Technovore (2013 animated movie), Avengers Confidential: Black Widow & Punisher (2014 animated movie)
Earth-120703 - The Amazing Spider-Man (2012 live action movie), The Amazing Spider-Man 2 (2014 live action movie)
Earth-121347 - Ghost Rider (2007 live action movie), Ghost Rider: Spirits of Vengeance (2012 live action  movie)
Earth-121698 - Fantastic Four (2005 live action movie), Fantastic Four: Rise of the Silver Surfer (2007 live action movie)
Earth-135263 - Fantastic Four: World's Greatest Heroes (2006 animated series)
Earth-199673 - The Invincible Iron Man (2007 animated movie)
Earth-199999 - Iron Man (2008 live action movie), The Incredible Hulk (2008 live action movie), Iron Man 2 (2010 live action movie), Thor (2011 live action movie), Marvel One-Shot: The Consultant (2011 live action short), Captain America: The First Avenger (2011 live action movie), Marvel One-Shot: A Funny Thing Happened on the Way to Thor’s Hammer (2011 live action short), Marvel’s The Avengers (2012 live action movie), Marvel One-Shot: Item 47 (2012 live action short), Iron Man 3 (2013 live action movie), Marvel’s Agents of S.H.I.E.L.D. (2013 live action series), Marvel One-Shot: Agent Carter (2013 live action short), Thor: The Dark World (2013 live action movie), Marvel One Shot: All Hail The King (2014 live action short), Captain America: The Winter Soldier (2014 live action movie), Guardians of the Galaxy (2014 live action movie), Marvel’s Agent Carter (2015 live action series), Marvel’s Daredevil (2015 live action series), Avengers: Age of Ultron (2015 live action movie), WHIH Newsfront (2015 live action web series) Ant-Man (2015 live action movie), Marvel’s Jessica Jones (2015 live action series), Captain America: Civil War (2016 live action movie), Marvel's Luke Cage (2016 live action series), Doctor Strange (2016 live action series), Marvel's Agents of S.H.I.E.L.D.: Slingshot (2016 live action web series), Marvel's Iron Fist (2017 live action series), Guardians of the Galaxy Vol. 2 (2017 live action movie), Spider-Man: Homecoming (2017 live action movie), Marvel's The Defenders (2017 live action series), Marvel's Inhumans (2017 live action series), Thor Ragnarok (2017 live action movie), Marvel's The Punisher (2017 live action series), Marvel's Runaways (2017 live action series), Black Panther (2018 live acton movie), Avengers: Infinity War (2018 live action movie), Marvel's Cloak & Dagger (2018 live action series), Ant-Man and the Wasp (2018 live action movie)
 
 
 
Earth-400005 - The Incredible Hulk (1977 live action series), The Incredible Hulk Returns (1988 live action movie), Trial of the Incredible Hulk (1989 live action movie), Death of the Incredible Hulk (1990 live action movie)
Earth-400083 - Hulk (2003 live action movie)
Earth-534834 - Fantastic Four (1994 animated series), Iron Man (1994 animated series), Incredible Hulk (1996 animated series)
Earth-555326 - Next Avengers: Heroes of Tomorrow (2008 animated movie)
Earth-600001 - Captain America (1944 live action movie serial)
Earth-600026 - Captain America (1966 animated series), Incredible Hulk (1966 animated series), Invincible Iron Man (1966 animated series), Prince Namor the Sub-Mariner (1966 animated series), Mighty Thor (1966 animated series)
Earth-600043 - Captain America (1979 live action movie), Captain America II: Death to Soon (1979 live action movie)
Earth-634962 - Silver Surfer (1998 animated series)
Earth-635972 - Power Pack (1991 live action pilot)
Earth-652975 - Pryde of the X-Men (1989 animated pilot)
Earth-697064 - Captain America (1990 live action movie)
Earth-700029 - Generation X (1996 live action movie)
Earth-700089 - Fantastic Four (1967 animated series)
Earth-700459 - Spider-Woman (1979 animated series)
Earth-700974 - Thing (1979 animated series)
Earth-701306 - Daredevil (2003 live action movie), Elektra (2005 live action movie)
Earth-704509 - Mutant X (2001 live action series)
Earth-730784 - Avengers: United They Stand (1999 animated series)
Earth-730911 - The Amazing Spider-Man (1977 live action series)
Earth-751263 - Spider-Man Unlimited (1999 animated series)
Earth-760207 - Spider-Man: The New Animated Series (2003 animated series)
Earth-800801 - Dracula: Sovereign of the Damned (1980 animated movie); Monster of Frankenstein (1981 animated movie)
Earth-904913 - Iron Man: Armored Adventures (2008 animated series)
 
 
 
Spidey Super Stories (1974 live action TV segments)
Iron Man’s Adventure (2008 animated web series)
Black Panther (2010 animated series)
All Winners Squad (2012 animated web series)
Marvel Super Heroes: Maximum Overload (2013 animated web series) - Earth-13122
Phineas and Ferb: Mission Marvel (2013 animated special)
 
3 dev adam (1973 Turkish movie) - Live Action Film “Three Mighty Men” US Title
Guiding Light "She's A Marvel" (2006 live action soap episode)
Meteor Man (1993 live action movie)
Powers (2015 live action series)
 
Guardians of the Galaxy Shorts
Marvel Rising: Initiation
 

Incorrect: Thanos killed Gamora and Pip the Troll
Correct: Thanos mortally wounded Gamora and lobotomized Pip. It was Adam Warlock who ended their life by taking their souls into his gem,