Swapped, Possessed, or Sharing a Head

[WIP] Shows and movies about 2+ characters swapping bodies, sharing a body, and/or non-demonic possession (or if it is demonic, the demon is a character more than just some evil force). Does not include age changes, shapeshifting, transmigration, or DID. I have a version of this list [on Letterboxd already for movies,] so might as well make one here! And what the heck, here's my [complete working list of all swap media] as a spreadsheet, too. I had a lot of time during the pandemic.

Loosely ranked, with unseen titles at the bottom.