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
This channel is such a hidden gem. Their Patreon is also one of the best investments I’ve ever made. They do a monthly puzzle club where they send out packs of puzzles that take plenty of time to work through.