I know exactly the plastic run you're talking about, and I've got a few different molds that are from that run.
I wish I knew how to find more of these too, bc its some of the best feeling champ Plastic ever IMO. I do like the new Jolly Launcher though and some is softer than others, but not really like the same old Gummy mentioned here. I have a few 12x Eagle L's that are pretty gummy feeling, but they are the cloudy ones that were the last run of champ plastic that is still Pre flight #'s. That plastic seemed to have problems with mold release or something, bc is looks smugged or distorted slightly on the flight plate. I have a lot of Ontario Rhynos like this. They feel gummy-ish, but not the super clear OG Gummy.
As for the true Gummy plastic your talking about...
I have two Spiders, one Shark, and 3 Ontario Rhynos that are from that run of plastic. The Rhynos are offten reffered to as "Glass Top". Some people call the later cloudy run "Glass Top" too, but I dont really consider those "Glass Top" bc they arent clear as glass. The true Gummy "Glass Tops" I have are LITERALLY clear as glass, gummy, and grippy as hell!
Pics: