Hand 1 - Perfect, really noything much to say about that
Hand 2 - Definite fold. This hand is cheese with 1 limper in front. If you raise, the BB and the limper are calling, if you limp you are getting pretty much the same action + you might lose position if the button comes along.
I might open raise this hand but I wouldn't raise a limper, I would play it if 2+ people limped in front of me. But 1 is asking for trouble. In this case you got everyone else to come along for 1 bet. That won't always happen, sometimes you'll get raised and others only you the limper and BB will see the flop. Just muck that cheese and wait for a monster like KJs
Hand 3 - Again, fold that mess. This is another hand I would open raise with, but not raise a limper. Similar to K8s, I would limp in if 2 or more people had already and I would open raise from the cutoff or button, otherwise fold.