I don’t like the clone body idea. I prefer having his original body survive.
But I think it just raises too many questions. How did his body survive exploding TWICE? How did he survive being in the vacuum of space for who knows how long? How did the Sith Cultists know he was alive, and find his body amid all the wreckage? It makes much more sense for Palpatine to have a contingency plan involving clones, like in the novelization.
Naboo is known for its use of decoys and Palpatine is from Naboo. I was half expecting George to prank us in the PT by revealing Sidious and Palpatine to be 2 people after all. Or maybe one of them a droid.