I don't watch that much Youtube nowadays (don't have much free time), but when I do, I enjoy these channels the most:

• Girlfriend Reviews: Entertaining, funny, and wholesome reviews. Really like their dynamic;
• GPLaps: Very interesting simracing channel, you get regular simracing content but also some very interesting videos about historic races, cars, tracks, etc., that he recreates with mods;
• Kilian Experience whenever he feels like uploading. Has been branching to other stuff aside from gaming lately;
• LordKnight: Fighting game-focused channel. Initially subscribed because he was the Millia player outside Japan but switched to Baiken since. Still has good, insightful content.

On PeerTube, there's BoilingSteam, who mainly focuses on PC gaming on Linux. I'd like to get a better feel for what's on there regarding gaming channels and whatnot. If you know any you'd recommend, I'd really appreciate if you could mention them.