Villains that would work in a Nolan batman movie:

Penguin: Realistic. A stout, gentlemen-like mob boss arms dealer who owns The Iceberg lounge where alot of crooked deals are happening. He also loves birds. take away the flying umbrellas & you got yourself a real threat. Bob Hoskins or Joe Pesci would play him well.

Catwoman: Realistic. a female cat burglar that wears goggles & cat ears, sounds plausible to me!

Riddler: Realistic.

Black Mask: Realistic

Villains that would Never, ever work in a Nolan Batman movie:

Clayface
Poison Ivy
ManBat
Killer Croc