If this is FR, I'm more on the tighter side. Facing an UTG raise and a flat; with the odds
and being IP I think it's "ok" to call but I think foldings fine too but don't get to invested on ace high flops if there's a lot of aggression. Raising doesn't make much sense to me, unless UTG is opening a lot of hands and MP is calling a lot it doesn't make a ton of sense. It's like; if he's raising wide, we want to keep those hands in, if we 3B, he's either folding or going to 4B AK+ and flat AQ so we've bloated a pot with a worse hand.
I think AJo is overplayed a lot, I tend to think what we would do with a hand like ATo here, I'd probably fold for sure if this was FR and given AJo isn't exactly much better than ATo facing those UTG raises it's one of those spots that could well turn into a reversed implied odds hand. Either the flop comes down Ace high and we win a small pot, or potentially lose a big one.