PPG, the choice of Ferrari, Boeing and Airbus. Almost all the automakers use PPG paint in some form. The Japanese OEs have PPG make their Nippon Paint/Kansai Paint formulations for them in the US. Mercedes had PPG come up with CeramiClear. BASF is the other OE-level supplier. Mercedes, VW and Tesla uses BASF.
But paint is only as good as as the painter in the booth and mix room. A parallel - I know someone who was a union painter(now a super) who can make Behr Premium Plus go on just as nice as Benjamin Moore that costs 2-3x as much. But give me that Behr and I’ll complain until I go to my local Ben Moore dealer. Oddly enough, there was rumor Berkshire Hathaway was interested in Axalta, the former automotive and industrial paint division of DuPont(Cromax/Imron/the legacy DuPont brands, Spies Hecker and Standox) - if that happened, it would have been folded under the Benjamin Moore business.