Tonya Harding wins hands down for me personally. I also consider her the greatest jumper in the history of women's f.s., heck even better than the men's, truth be told.
That said, Oksana Baiul's 3L was truly a thing of beauty when on (yeah I know it was rarely on, but when she did hit it, watch out, world!). Unfortunately I am having problems with youtube right now, so am unable to find her 2000 Goodwill Games FS to "Dove L'Amore" by Cher. But this is what Peter Carruthers had to say about it at the time:
"One of the most incredible triple lutzes I've ever seen! That's bigger than Brian Boitano's...that was H-U-G-E!"
Regards the triple lutz jump itself, I'm a traditionalist when it comes to this jump, and by that I mean I favor the
long gliding edge going into it, which used to be the norm until this past decade when those that couldn't hold the proper edge shortened it, so now it makes it hard to distinguish at times from the triple flip. Big no-no from me. Bring back the loooong gliding edge, please, thank you.