Oh whow there is NO WAY I would remember them all now, especially since I have my old stuff on old harddrives I cannot access easily now.
Erica Rose Campbell (USA) instantly comes to mind (even before reading the thread, OP already mentions her). Absolutely iconic.
Haruki Mizuno (Japan) of course, beauty and cuteness incarnate.
Aria Giovanni (Italy), another EXTREME beauty back when she was young and new. She did some stuff with Erica Rose Campbell, too.
Maria Ozawa (Japan), same. I think she's as iconic as Erica Rose Campbell, actually.
The overwhelming beauty of the young Wiska (Belarussia).
At the very end of the decade Anita C @ Met-Art (IIRC russian?), another most extreme beauty.
Bree Daniels (USA), who just defies and transcends any description.
The divine being that is Penny Flame (USA).
The oh so wonderful Charlie Lane (USA).
The epic Jana Cova (Czech).
The uber uber sweet Justine Joli (USA).
Also a couple I wasnt really personally the fan of, but who have been quite universally popular.
Gianna Michaels; as somebody who isnt into big boobs I'm always amused how nobody ever mentions how extremely super beautiful her face is.
Ariel aka Piper Fawn.
There was also Sylvia Saint of course.
There was Sasha Grey who later would torture us with public talk about her pornstar days. Like she wanted to be forgiven or something or whatever.
Jenna Haze was also pretty universally popular.
And many personal favorites, like Melissa from XXXRaimi. I wont list those though. Not of general interest.
Oh, yes, Faye Reagan. Unbelievably gorgeous, and titts of steel. See, thats already an important one I would have missed.
I bet I've forgotten more of them.