The Weekly Thing. More Minecraft based, though.
At first i was watching Apollo legend but sadly it passed away before 3 years...
Then moved to GladJonas and SRF ( SpeedRunFais) both channels are entertaining to watch and then i got lucky because YouTube recommended a Karl Jobst video and oh boy i hit a Jackpot Super interesting because it breaks down the runs and his videos are pretty much well-made Masterpieces so yeah i stuck with it ever since
Recendly i'm looking at Abyssoft it's pretty good too and goes into detail as well.
I'm uncertain if he plans to continue making content regularly or not but ThaRixer has made a handful of fantastic speedrunning documentaries. I used to really enjoy Karl Jobst, and he has a great way of making videos, but I'm exhausted with his tendency to focus on awful cases of cheating for attention because it perpetuates the idea that cheating and speedrunning are linked/frequent, of course, I want it to remain as rare and shunned as possible but it feels like it's still expanding due to that branch of content.
averagetrey has a handful of great speedrunning (or similiar) documentary videos. ex sms 120 shines and any%
I can think of a few others actually! Storster, Speed Docs, DoctorSwellman, and EZScape! All amazing content creators on speedrunning!