Off the top of my head and in no particular order:

Serenity
Janine (pre-tats obviously)
Stacey Valentine
Anita Blonde (could have easily been a successful, legitimate model)
Tera Patrick (pre-titjob and idiot husband)
April Flowers
Ginger Lynn (80's era, hairy cooch and all)
Roxanne Hall
Alexa Rae (when she didn't have acne)
Bunny Luv

I'm sure my answers would change if you asked me next week, but that's what I thought of now.