Most of the content I see is aimed towards beginners so I was looking for context for experienced developers.
Another channel is Casey Muratori‘s Handmade Hero, which is about developing a game from scratch.
Jon Gjengset, Rust (internals, data structure, protocol impls) https://www.youtube.com/channel/UC_iD0xppBwwsrM9DegC5cQQ
aarthifical, not really live-coding but a game devlog with interesting ideas https://www.youtube.com/channel/UCtEwVJZABCd0tels2KIpKGQ
Bisqwit: https://youtu.be/PahbNFypubE?t=1045
Intermediate C++ videos, often with some angle towards graphics or emulation.
While his content is not structured as a tutorial, he explains his line of thinking very well.
Hjalfi writes a vi for CP/M (9 hours)
Hjalfi writes an assembler (7 hours)
Hjalfi ports Fuzix to the ESP8266 (38 hours)
Plenty of testing, building for reliability and whittling down to the simplest, most-elegant solution possible.
Machine Learning with Phil
So far I have a course on publishing a pip package and a cron implemented with aws lambda.