Those are all horrific flops. And on at least two of them, the foul is questionable at best. And I stopped linking gifs out of exhaustion. There are a ton of examples out there.
Chandler set about the most illegal screen there is. Its common in the NBA, because their rule enforcement is trash, but its quite clearly a foul based on...rules.
Chandler is moving towards James while setting the screen. Thats like the first thing I was taught in 3rd grade when learning to set screens- set your feet and dont move. Actually, thats about all there is to it, so he violated everything about setting a screen.
The Paul George pushoff is something that could be a no call, but George uses his right arm to make contact with James' chest, create space, then step out for the pass. Look up the rules- you cant create space like that. Foul.
Once again(or aGAIN or however you do that), a flop is different from drawing attention to a foul.