I actually have a তালিকা of all the villains from পছন্দ to least favorite. I'll give my শীর্ষ 5:
The শীর্ষ spot goes to Yzma for being extremely fun, casual, subverting many villain cliches, and for doing her own dirty work alongside her underling. Just a hair below her is Ursula for being so devious, actually valuing her minions, and for just being so shiveringly sultry.
পরবর্তি is Frollo for being SO dramatically self-righteous and chillingly realistic. Rourke wins পরবর্তি for being just so cold and real it's amazing.
Lastly, I bring up Hades, for being wonderfully kooky yet dark, and for his great energy.