[yad]

I think 3 and 4 are both clear reraises.

Calling in hand 4 and playing exclusively for set value is just asking for the button to take your money IMO. Against his range, you have terrible implied odds for your set. But you do have lots of FE: reraise and make him pay for trying to steal your blinds.

I think #2 is a clear call. You can play for set value only and be fine, or you can play a bit more aggressively if you know what you're doing.

#1 is the most difficult IMO. I will sometimes call, sometimes reraise, and sometimes fold in this spot. I think calling is probably not a great idea but I will do it sometimes. My default is to reraise, but if UTG really is that tight in his raising standards I can see folding.