For long form,
Bobby Broccoli, ~1hr videos on science scandals https://youtube.com/@bobbybroccoli
Defunctland, 30m to 1h45m videos on defunct theme parks and rides https://youtube.com/@defunctland
Your dinosaurs are wrong, 15m to 1h45m videos on comparing toy dinosaurs to the most up to date research https://youtube.com/@yourdinosaursarewrong
2nd on Drachinifel, 7m to 1h45m videos on naval History https://youtube.com/@drachinifel
Perun, 1h videos on defense economics https://youtube.com/@perunau
Diplo Strats, 2h to 6h videos on diplomacy the board game, like risk on massive steroids https://youtube.com/@diplostrats
I haven’t actually found anything that doesn’t work on Firefox on my personal computer. At work we also use Firefox, and some things don’t work on it, but some things don’t work on chrome or edge either, it’s a hodge poge.