Hand where you have JT... It's folded to the SB, who puts a min-raise out there, yah? So you have the effective button with JT against a min-raise.... wouldn't you 3-bet this spot usually?

Other than that, I think a huge majority of the time when you see someone bet the exact same amount OTF as they did PRE, then it's a bluff. If I called PRE, I'd raise OTF.

OTT is probably the worst time to raise, but it's not bad. You can easily rep Kx, even suited Kxs in hearts or clubs. Unfortunately, your timing was off as Villain's 3-bet jam OTT is strong enough to have only a few bluffs in it, and so you're done.

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The hand with AJs I don't like at all.
I agree with your assessment of PRE. Playing AJs OOP in a HU pot is pretty solid. Playing AJs OOP in a multi-handed pot is just dangerous. I think this whole hand is a train wreck because of this call. Your 2 villains have drastically different stack sizes and you're going to want to play the hand differently based on which one you iso. I say, iso immediately and plan your hand HU based on Villain's stack size.

OTF, I like the c/r. I like your reason for not leading out. BUT when the BTN calls, you have to consider SPR's immediately.

OTT, you're in the hand alone against a shortish stack. You should jam the turn or c/f. It's hard to fold here, but when you're beat, you fold. If the chips are going in, then put the decision (if there is one) on Villain.