LogFAQs > #977069494

Probably First We Feast, since they have over 12 million subscribers (Im not subscribed to them though). I was curious about the stuff that I am subscribed to here they are, ranked by subscribers (I was really surprised by some of the results):

20.4M - Vsauce (random deep dives into science/philosophies)
10.4M - How It Should Have Ended (humorous retellings of movies)
9.18M - CinemaSins (humorous recaps of mistakes in movies)
7.93M - OverSimplified (Humorous retellings of historical events)
4.08M - Vsauce3 (Rationalizations of things happening in fictional worlds)
4.04M - TeamFourStar (Dragon Ball Z Abridged)
2.96M - Comistorian (comic book story retellings)
2.69M - Smooth McGroove (A cappella video game remixes)
2.27M Comics Explained (comic book story retellings)
1.81M Jomboy Media (baseball highlight breakdowns)
1.66M - Maximillian Dood (fighting game videos)
1.64M The Completionist (recap videos of games being 100% competed)
1.03M - Gaming Historian (deep dives into events/games)
884K - ProJared (video game reviews)
867K - Totally Not Mark (DBZ videos mostly)
592K - Matt McMuscles (Wha Happened - deep dives into what went wrong stories)
391K - Friedrich Habetler Music (video game and anime music remixes)
347K - rabbidluigi (Top 5/Top 10 lists for gaming)
257K - GaMetal (Heavy metal covers of video game music)
142K - Resonant Arc (deep dives into RPGs - can be dozens of hours)
86.3K Husky by the Geek (Heavy metal covers of video game music)
72.4K - Jeremy Parish (retro game videos; cohost of Retronauts)
34.8K - Ludiscere (Outstanding deep dives into RPGs/Final Fantasy games)
32K - The Second Narrator Music (video game music remixes)
14.6K - Synthescissor (video game music remixes)
9.15K - MrDestructor90 (video game music remixes)
5.09K - Electric Rabbit (video game music remixes)
986 - Sipi Ovaska Music (video game music remixes)