[Sawrock]

I agree completely except the “every good villain rationalizes themselves as doing the right thing”. Three out of seventeen of my villains (that I can think of off the top of my head) think they’re in the right.

A good outer example of a villain who doesn’t think they’re right is Xykon of the Order of the Stick.
A good example of a villain who does think they’re in the right is Stanley from Erfworld.

Both are tropes. Both have their uses.