I linked a Warlockracy video because I really enjoy his choice of games and presentation.
Other channels I really enjoy: Mandalore, Grim Beard, Civvie11, Oboeshoesgames, and Boulder Punch.
If you can’t tell, I like longform, scripted and edited videos on older games and niche games and mods.
Jeremy Parish makes weekly videos covering the entire retro game history for a various retro consoles. He’s been at it for years and is very entertaining to listen to! The history and development circumstances he describes make even old shovelware fun to hear about.