Newsom has caught my eye too. Terrible politics, but a smooth operator, which the Dems would need. I think he'd want to run, too.
Cuomo, maybe, though I'm not convinced yet that he wants the top job. I think he'd go for it before any cabinet or VP slot, though. Seems to like being in charge.
Stacey Abrams will muscle anyone out of the way of a microphone if she can get anyone to listen to her whining. Why they're so stuck on her, I'll never know, but they likely have some role in mind for her.
Whitmer in MI sure likes the spotlight, as does Pritzker in IL. Not sure either would have a huge role.
Don't forget AOC and the squad. Plenty of loudmouthed entertainment if nothing else.