Only philosophy and history youtubers, some relatively abstruse.
Dave Harris - old Brit guy doing Deleuze stuff
Dr. Sadler - does all sorts of philosophy, especially love his half hour Hegel series(though I just started with it). you guys might be familiar with him if you came here from /lit/.
Theory and philosophy - some amateur philosophy student with primary focus on Baudrillard, he also did few Frankfurt school stuff while back.
Mostly watch cookie cutter history channels like invicta, history marche, history time, historia civillis etc.
Also, Some docs and vlog channels(actually forgot their names lol).