Which youtubers do you find thoughtful, insightful, or helpful when it comes to TTRPGs? Obviously Wargamers are all welcome here. Lore youtubers are welcome. Maybe some that aren’t as popular as they should be. I’ll start.

Bandit’s Keep- He’s got an OSR slant, but many of his ideas are applicable to many games. Discussing things like overland travel rules, dungeon design ideas, urban design ideas, etc. He’s calm, thoughtful, and I always enjoy listening to his videos.
Desks and Dorks- A self-described “eurocentric historian” by training, he discusses various historical concepts in roleplaying games, low fantasy, and has really improved my ability to introduce verisimilitude in my campaigns.
Black Lodge Games- Probably the most well known on the list. A little inflammatory and culture-war-y, but I agree with a fair bit of their larger points (e.g. how roleplaying is different than acting and how popular let’s plays like Dimension 20 and CR create a misrepresentation of the hobby). I think their best work, though, is in discussing games they enjoy playing such as Mythras and Vampire (their Vampire content is really interesting).
Power Word Spill- The one 5e guy on my list. More bearable than most 5e content creators and I really enjoy some of his more system agnostic content (such as props to give players, which I think is really a lot of fun)
Shonner - Rest in peace to this legend. You might not agree with him and his videos are a slog to get through at times. But, by god, his philosophy on roleplaying and immersion has changed the way I play games for the better. His whole
Me, Myself and Die!- I don’t love all his stuff, but his series on designing his current RPG (Broken Empires) has been incredibly useful for me and his ideas are really interesting (particularly how he approaches social situations and roleplaying mechanics to support social encounters)

No actual plays, please