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
Dave bull a Canadian print maker specializing in Japanese wood blocks, something wicked clay sculpturer who makes historical fantasy monsters, lady of the library breaks down myths.