If I try to restrict to the smaller channels (some of these are quite big anyhow, but whatever):
Kaze Emanuar
Mario 64 modding focus, with coding deep dives
https://www.youtube.com/@KazeN64
Decino
Classic Doom content, with coding deep dives
https://www.youtube.com/@decino
Timbah.On.Toast
Music and culture focused video essays
https://www.youtube.com/@TimbahOnToast
José
Musings on historical sitcoms and conservative media
https://www.youtube.com/@JoseBird
Cass Eris
Scathing book reviews of pop psychology
https://www.youtube.com/@CassEris
Dr. Fatima
Astrophysics, Space, and Politics
https://www.youtube.com/@dr.fatima
Simon Roper
Linguistics and other stuff
https://www.youtube.com/@simonroper9218
Clickspring
Precision hand manufacturing
https://www.youtube.com/@Clickspring
Acorn to Arabella
Wooden sailboat build, and now sailing