Youtube Channels for a Gamer/GM

I'd recommend watching Youtube videos on topics of interest, generally NOT gaming videos. I get more from:

Scholagladiatoria - weapons
Shadiversity - weapons, castles, dragons, etc etc
Lindybeige - history, weapons, culture, etc etc
PBS Spacetime - space, astrophysics
Science & Futurism with Isaac Arthur - what it says
John-Michael Godier - space
Dr Becky (admittedly her cuteness may be a big factor!)  - space
PBS Eons (though it's pretty lowbrow compared to Spacetime) - evolution/paleontology
Overly Sarcastic Productions - history, mythology, tropes