I just started using AUCTeX today. It seems like AUCTeX knows the symbols for some packages I use, but not all of them (I've been testing this with autocomplete using company-auctex).
After checking "TeX-style-path", I found a directory with AUCTeX style files for specific packages, like "amsmath". I didn't see one for some other packages I use, like "physics".
Does each new package need an AUCTeX style file, or can AUCTeX generate the style from the .sty file for the package, like it does for user files?