Others I treasure are: john romero (twitch), george hotz (twitch), and stephen wolfram (twitch, youtube).
The latter also has astonishingly low viewer numbers (typically <20).
What other lesser-known gems are out there?
“Tsoding Daily/Tsoding” on YouTube/Twitch is entertaining and covers a very wide range of topics. I don’t think he’s “classically trained” per se, but he’s knowledgeable and great at solving interesting problems.
I haven’t checked it out yet, but I think Ryan Carniato (the creator of SolidJS) streams live coding on YouTube too.
Andrew Kelley of Zig -- https://www.twitch.tv/andrewrok
Really enjoy watching both of them work, and they're both so... calm, cool, and collected in their focus on the technology they're working on as opposed to 'content creation.'
He does graphics programming, writing his own game engine from in C++ using OpenGL. The vibe in his streams is really something else, very interesting guy.
(Actually I'd consume more of that kind of content ie unpolished, quick videos. To me, the signal-to-noise is higher on videos like https://www.youtube.com/watch?v=ovNZU-gzr6A than videos like https://www.youtube.com/watch?v=81fAtiORLAg, which seem to take 99% of youtube)
You can take a look at the final of the Shader Showdown at Revision last year here: https://www.youtube.com/watch?v=EJ7KAD0NyGw
There's a TIC-80 'bytejam' every Monday Night (8 or 9pm UK time depending on the week) on https://www.twitch.tv/fieldfxdemo
And you can catch some previous VODs here: https://scenesat.com/videoarchive
Sometimes I lost my spark with programming. Watching him reminds me to enjoy programming more.
https://www.youtube.com/@TenderlovesCoolStuff
Some examples:
Writing a test framework: https://www.youtube.com/watch?v=bmi-SWeH4MA Hacking on the Prism compiler: https://www.youtube.com/watch?v=6loKD2LXxbc
Thank you very much - I will definitely watch some of those.