I've given up on everything except the polisher and abrasives, and even with them I have to reserve some degree of skepticism especially when dealing with removing paint coatings. But if my goal before doing work is to remove an LSP from the surface, I'm pulling out the polisher and abrasives, period. And I've tested soaps like Wash+, Clean Slate, Adam's Strip Wash, Dawn, Purple Power, etc. I've tested IPA panel wipes at various dilutions and concentrations, I've tested a bundle of body prep solvent cleaners (wax and grease removers), sprays like Poorboy's Strip Down, different degreasers. There's a line between removing the wax from the surface, and creating a hydrophilic surface. Just because the surface is hydrophilic, it doesn't mean the wax has been fully removed. Just because the surface is not hydrophilic, it doesn't necessarily mean there's a wax left on the surface. Does that make sense?
Once we factor in the potential for heavy masking surfactants that aren't easily rinsed, it's too difficult to make a clear judgement on wax removal. Then we have to account for the "true" behavior of unprotected paint which adds another degree of confusion. I can have the panel polished, IPA wiped, then washed with Dawn and the panel is FLAT during the rinse. Then a few months later, polished with the same abrasives, same IPA wipe, same Dawn soap, and the panel is sheeting slightly, no where near as slow as before 2 months ago. What changed? Temp? Humidity? The types of LSP's I was testing consecutively over this period? So where do I pinpoint my baseline unprotected water behavior?
Most of my testing has been on fresh products, strip products have had various degrees of visual effectiveness but this varies greatly between products. Fusso Coat was extremely resistant against Meguiar's Wash+ at full strength out of the bottle and heavily worked in with a sponge a multitude of times. Pretty much everything in the short term is resistant against the other strip wash soaps. Body shop wax and grease removers have been so-so, some of them are much better brands than others (Dupli-Color wax and grease remover was nearly useless for example). Wash Plus generally does a good job of producing a hydrophilic surface when used very heavy and worked directly in a section, but using it like this has produced marring on every panel I've tested it on.
I'd say I can easily make the call when a product has survived on the paint, truly unprotected surfaces when exposed to the same durability cycle and contamination on a daily driver will in most cases produce a hydrophilic water behavior over time, but I'm not at all comfortable making a solid call in the short term with anything that the LSP has been fully removed by "product xyz". It's been "prepped" with the abrasive and polisher, that's what I'm going to start saying.