I definitely agree with a bunch of this, but you lost all respect
when you called Deadpool chaotic good. GOOD? No.

Secondly, I feel like flipping between good and evil is not chaotic.
It's either an alignment change, or they're really just plain neutral
alignment to begin with.

Also, I absolutely love the Chaos Lords in Moorcock's Swords Trilogy. They do well at chaos without insanity, and I think they really fit
the bill well.