George Lynch used one at different times, I know he is known for the Distortion, the Screamin' Demon, and the Distortion "Light" (Dokkenbucker?), but he used a lot of pickups.
He used the Holdsworth model in the old White Fender turned Charvel. It's basically a JB with 12 allen poles. The purple and blue Charvels had JB's and he uses the JB now.
Most of these artists listed above are confirmed users of the classic 80s JB however, i have heard that Chris DeGarmo mostly used 59's. I actually just emailed him from his current band/project website to hopefully get a confirmation on this.
I remember an article with Chris and Michael and they said they had some custom Duncan pickups, I think they called them Screaming Eagles or something, don't think it was anything official though.
I remember on an SD endorsement flyer DiGarmo and Wilton said 59s. I get my best early Queensryche tone with a Jackson J-50B (similar to a 59 in specs).