- Audi - Quattro Gmbh, RS models
- BMW - M Performance
- Cadillac - V-Series
- Chevrolet - Formerly "SS" branding, no new title yet
- Ford - Formerly SVT, now Ford Performance
- Fiat-Chrysler - Abarth, SRT
- Hyundai - N blah blah blah
- Infiniti - Former project lead by Sebastian Vettel, no idea what's come of it
- Jaguar/Land Rover - Special Vehicle Operations and "SVR"
- Mercedes-Benz - AMG
- Mazda - Mazdaspeed
- Nissan - NISMO
- Opel/Vauxhall - OPC/VXR
- Toyota/Lexus - TRD and F models
- Volkswagen - R models
- Volvo - Polestar
I'm sure I've missed a few in there somewhere. Not sure what the French brands are up to these days, in addition to what the skunkworks models at Ferrari and so on go by. A lot of brands raced to have special model identities and then suddenly walked away from them (Chevrolet), while others are building up to it or have it, but don't have a special name for those high-performance models (Jaguar/Land Rover).