I learnered about some interesting looking channels from this thread so I'll pay it forward and share some that I like.
2 and 20
Angela Collier
Bobby Broccoli
Climate Town
Computerphile
Defunctland
fern
Folding Ideas
JimmyTheGiant
KnowledgeHusk
Lextorias
Not Just Bikes
Odd Compass
Ordinary Things
PBS Space Time
slow start
Suibhne
Thought Slime
Tom Nicholas
Yeah that's a great one! I intentionally didn't mention channels that I saw others had already listed.