I don't think Webarchive ever got a complete image of the whole site. They scraped all the videos on all the Amateurz affiliated sites early since there was a copyright issue with the software. There were over 40 sets released on Xphoto, many I never saw anywhere else like the Nurse set, "Gina Frames", and a later handcuff one. The later sets overlapped with her Loonerz era sets (going by the frizzy hair she sported after growing out the blond bob)
There are several exclusive ones too that never showed up as liscenable content on Xphotography. So far Publiccrush is the only site I know that has active updates with "new" exclusice material (I'm sure the pics were taken some 5 years or so ago...) PC has also featured a few of Xphotography's sets as well the most recent being the Fishing Pole set that was one of the last sets that Xphotography featured before folding.