I made the following list for my advanced undergraduate quantum mechanics course, and it took a lot of time to compile, so I figured I should share it more broadly. It is a collection of YouTubers who I had mentioned in that class.
As with most social media, the large fraction of content is not worth one’s time. However, there’s also some great content out there. The first two here are among my favorites, and Mr. P. Solver is good, too:
Vihart: self-described “mathemusician.” She is probably my favorite math or physics YouTuber. Some of her videos evoke an emotional reaction in me. Here's some of my favorites:
3Blue1Brown: a master in python animation and excellent expositor of complicated topics. I discovered him in his great explainer of bitcoin blockchain. Here’s some more math & physics ones that are excellent:
Mr. P. Solver: he mostly solves canonical physics systems using python. He's highly enthusiastic... Here’s some specifically quantum mechanics ones:
And, if you just want a great explainer of the history and fundamentals of interpreting quantum mechanics, I highly recommend Sean Carroll's talk to The Royal Institution. Plus, practically everything Kurzgesagt produces is excellent.

