I can't think of any. You got to remember, Optimum makes polishes and a coating - so they have done their homework.
Maybe CarPro Reflect?
This is where things seem to get a bit confusing, at least for me, as there is so many multiple choices of prepping a paint prior to sealing, or coating?
Products like GTechniq Panel Wipe, Carpro Eraser, the Cleansing products from Pinnacle-DP, homemade IPA Mix, and I'm sure there's others I'm forgetting, and/or not even aware of that are out there?
The questions of course, is the variability of ease, effectiveness, and the possibility of again instilling marring to the paint prior to the LSP?
I've read through many such reviews here of such products, and it seems all have pro, and con comments, and qualities about them.
Gee, I didn't have all these new headaches when I was a Collinite man for so many years! LOL
Mark