Hmm I keep looking and finding more, and I'm not sure just how many there are. There's probably a huge list of one-offs, but how many showed up more than once?
Supers:
She Hulk
Daredevil
Anne Weying(She-Venom, deceased)
Lady Bullseye (DD)
Beetle(Janice Lincoln)
Two-gun Kid
Benjamin Donovan
Ogress(Diane Davids)
Murd Blurdock
X-characters
Sharon Ginsberg
Harold Leland
Cameron Hodge
James Madrox
Evangeline Whedon
Cable
Non-super:
Mallory Book
Connie Ferrari
Jeryn Hogarth
Foggy Nelson (DD)
Kirsten McDuffie(DD)
Bernie Rosenthal
Blake Tower(DD)
Rebecca Blake(DD)
Rosalind Sharp (DD)
Legal
Yeah, the wiki has 508 entries, but well over a hundred of those are alt-u versions of main U characters, and I'm really not sure how many are one-offs.