I will try to mention channels not present already
Fall of Civilizations - for engrosaing long form documentaries
Productivity Game - For excellent summaries of productivity books
ABC Science
Animalogic
How it should have ended
Hungarian folk tales - for the nostalgic kid in me
Kevin Powell - for CSS
Microconf - for entrepreneurs
Minute Earth
Mind your decisions- for small math puzzles
New scientist
Cogito
History of the earth
North 02
Moth light media
Stefan Milo