There´s no squeeze maniac. Raiser is rather nitty, folds to most 3bets. His 3bet is like 3ish, so Im pretty sure this person won´t get it in with less than QQ, prob not even with that when his EP open gets 3bet. Other players are fish or fit-or-fold nits who don´t cause much trouble postflop.

As for the turn, I don´t bluff much here at all with BTN overcalling the flop. Furthermore btn has 88/22/33 a lot imo, so I wasn´t really concerned with UTG+1 at this point.

The thing is as griff said, there aren´t any spades in his range except the random sc´s he might open, but for those this turn is like a major double opportunity. I was thinking it´s either a stubborn AK (no particular read, but it seems people love to check when the turn pairs their overs) or AA pot controlling turn?