I think I avoided posting to this topic the first time around as there is no way I could narrow my favorites down to a top ten. However, here's ten from my top some huge number, that I don't think have been mentioned yet:

Valerie Gangi - Wasn't on the scene long, but man did she have a good hair day when WPW did their session with her!
Ursula Teply - Wasn't around long either, but got to hit the mainstream with a stint on International Gladiators as the German Gladiator, Power.
Melinda McNabb - Huge, ripped, and gorgeous, ie the total package, but again didn't hang around long.
Thea Bennington - Gotta love a woman who's impressively tall as well as being impressivly built.
Christa Bauch - Insanely developed everywhere, despite pushing fifty at the time (I think now she's in her sixties and still looks amazing).
Nathalie Foreau - Beautifully shaped, lean, muscular body and facially looks a bit like Evangeline Lilly, which is a huge plus!
Annie Sheehan - Because she seems really gentle and sweet... That, and she does a killer crab most-muscular pose!
Jan Harrell - More of a powerlifter than a body builder, but she looked amazing when she got into contest shape and was walking proof that a woman could be massively muscular and still be incredibly feminine. Pity there's not many photos or videos of her around.
Mavi Gioia - This generation's Sharon Bruneau... This woman is so beautiful, it's hard to believe she is real!
Bev Francis - She definitely deserves a mention as she truly was a pioneer in the sport when it came to pushing the size barrier, and she's an Aussie!

I think I have to redo my list.  Especially now since monster babe Aleesha is around 

Wendy McMaster
Brenda Raganot
Aleesha Young
Dawn Riehl 
Yaxeni Oriquen
Betty Viana
Heather Armbrust
Nursel Gurler
Joanna Thomas
Tomoko Kanda

Dupes! Traitors! Tastemakers!

Great question
Gina Davis (off season)
Colette Nelson (young anf beefy)
Sharon Marvel (hugest)
Tina Lockwood (peak)
Doughdee ( at her absolute brief peak)
Colette Guimond
Karla Nelson
Isabelle Turrell
Kim Perez
Debra Haley
Nikki Fuller

lots of others.