Villain is a semi aggressive Reg.

My thinking is that he is capped with JJ+ and AQ+ since he would isolate with those instead

The small blind shoving increases my calling range since its a KO

And only a slight chance of the open limper calling

PokerStars - 75/150 Ante 15 NL - Holdem - 8 players
Hand converted by PokerTracker 4

SB: 520 (VPIP: 18.18, PFR: 15.27, 3Bet Preflop: 4.62, Hands: 233)
Hero (BB): 3,316
UTG: 2,834 (VPIP: 26.32, PFR: 15.79, 3Bet Preflop: 0.00, Hands: 19)
UTG+1: 1,168 (VPIP: 39.29, PFR: 14.55, 3Bet Preflop: 4.17, Hands: 57)
MP: 3,020 (VPIP: 50.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 6)
MP+1: 5,192 (VPIP: 30.61, PFR: 17.39, 3Bet Preflop: 13.33, Hands: 50)
CO: 3,335 (VPIP: 44.78, PFR: 12.31, 3Bet Preflop: 4.55, Hands: 67)
BTN: 2,488 (VPIP: 19.47, PFR: 17.12, 3Bet Preflop: 8.27, Hands: 3,784)

8 players post ante of 15, SB posts SB 75, Hero posts BB 150

Pre Flop: (pot: 345) Hero has A J

fold, fold, MP calls 150, fold, fold, BTN raises to 2,473 and is all-in, SB calls 430 and is all-in, Hero ???

I don't have that much experience with these but it looks like a pretty clear call to me.

BTN only has 16bb. There are numbers of players that won't iso but shove their whole range. It's clear call for us with ATs+, KQs and 66+ IMO. I would treat this as if BTN has shoved first in (just tighten a little bit my range due to the limper and the fact that im not 100% sure about villains range here)