I like Jeremy Ethier much better, not only are his videos more dense, but they also tackle precise question with general applicability. They're also backed by solid science that is cited in the video, and feels less shaky than the "science" peddled by supplement vendors like Cavaliere or Jim Stoppani.

https://www.youtube.com/channel/UCERm5yFZ1SptUEU4wZ2vJvw