Ask HN: Favorite educational youtubers to listen to without watching?

I.e. channels where it's possible to understand (almost) everything by just listening and not actively watching all the time. I'm interested in all topics really as long as it's quality content and teaches me something.

Personal favorites are:

- Crash Course (they're all good but the history and history of science ones are especially good for listening in the background)

- Economics Explained - lots of great content, very easy to follow along with just audio

- PolyMatter - Some geopolitical and business stuff, relatively few videos but they're all quite good

- CGPGray, pretty random topics from Tolkien lore to geopolitics and the future of humanity. Some need video but most don't and they're all super interesting