For me I really do enjoy watching some of the Locking picking lawyers content and he is an expert when it comes to picking locks!
Another few are mental outlaw (although I think everyone knows of him here) and Steven Bridges who makes videos on card counting at casinos and he shows how much he wins/loses from playing
Here is an alternative Piped link(s):
there’s only one video so far
Watch for Rolling Rocks - 0.5x A Presses
Church of Kondo
mklachu
Retro Game Mechanics Explained
His video on Pac-Man ghost behavior
Piped is a privacy-respecting open-source alternative frontend to YouTube.
I’m open-source; check me out at GitHub.