Which players are currently at their peak in their prime?

Watching Damian Lillard go off this past month made me realize we are likely watching him play the best he can play. And hopefully as a Blazer fan it lasts a couple years, but I feel he is at the very peak of his game and I don't know how much better he can be. Do any other players fit this?

Excluded would be Anthony Davis because given his age there's still a chance he can get better which is a scary though. Giannis falls here too probably.

I'm thinking guys like DeMar Derozan? James Harden? Russell Westbrook? Any of the Warriors All-Stars?

This could also fit non-All Star guys like an Ed Davis.