Standard, BTN is not full cave and so is probably a fish. He has worst J (stuff like J6s and co), draws, even some 8x or slowplayed QQ+ in his range.

Well played

Pretty standard and well played.

Not standard at all in my opinion. I don't see any reason to reraise flop with what's probably one of your worst Jx combos on a board you will never reraise as a bluff. It's a VERY standard call in my opinion. Specially versus what OP see as an unknown.

I would just call the raise, nothing worse calls you and he could have some bluffs or overpairs that he might bet again OTT.

Yeah me too. I don't see how that's a standard play. If he's a reg he will only call with better hands and I don't think he would raise with FDs or worse Jx. I would just call down probably bc he still has some bluffs OTT.

BTN is not full cave so probably a fish, so I think it's a standard play. He can call with a lot of stuff here. Against a better player I agree that it's better to just call.