Sorry if this sounds like a dumb question, but I just got into limit and 6 max, and I am loving it so far. I have read SSHE and know many hands that a 2+2 full ring player is advised to 3 bet preflop w/, but I am often wondering when I see the donks on Party 1/2 3 betting preflop. What range is normal in these situations. Although I always call w/ AK, I am often wondering about AA or KK. In NL, a 2nd pf raise usually meant one of those 2 (at least at Pacific).

What is the usual range here? Anything? Depends on stats I know, and sorry if this is vague. Any help is appreciated.