If you're playing online, literally anything. If you're playing live, you want a hand that has equity and depends on the raise pre-flop/how many players are in the hand. If you have at least 3 players other than you and you're only looking at a 3x to 4x raise, I feel that a 65 suited hand or a one or two gapper can bust it.
Any suited hand, connector hand and pocket pair can crack AA; however, we need the community board to help us. We have 10% chance to crack big pair on the flop, and we will have more % if we flop a flop draw, straight draw, 2 pair, and set. This is why pre-flop and post-flop play is so important.
A small pocket pair since they have an instant draw 12% on flop. While 65s will take down your entire stack trying to draw as it is 1 to 62ish to flop at least a straight and 1 to 119 dog to flop flush.Meaning they usually flop draws and people are aggressive on every street and your entire stack will be in the middle by river with a mediocre draw. Better to just call 3 bet for the price of 3 cards.