For me: 1.) Cicada 3301 - Lemmino [17:53]: https://www.youtube.com/watch?v=I2O7blSSzpI
2.) Why gravity is NOT a force - Veritasium [17:33]: https://www.youtube.com/watch?v=XRr1kaXKBsU
3.) The cost of Concordia - Internet Historian [48:48]: https://www.youtube.com/watch?v=Qh9KBwqGxTI
4.) Fast inverse square root - Nemean [20:08]: https://www.youtube.com/watch?v=p8u_k2LIZyo
5.) The dark side of the Silk road - Barely Sociable [1:14:45]: https://www.youtube.com/watch?v=GpMP6Nh3FvU
Sorry, i’m a nerd. If you are not: only watch no. 3; it’s funny.
Seconding Qxir. His humor + artstyle + accent combine into a really amusing end result, plus he actually does a fair bit of research into the topics he covers.
Along those lines, Sam O’Nella Academy is another channel of “amusing narration + semi-crude yet understandable illustrations + genuinely informative”. I started with his video on Tarrare and chortled mightily throughout.