Deciphering Background Investigation Codes

I just finished having a “rushed” ATF Top Secret background investigation done on myself and I am super curious as to why my 2 year cohabitant girlfriend was not interviewed. Even during the interview the only question asked was her work location and for their contact info. I am assuming that a lot of those checks were done on her as well.

Furthermore, thank you for that list. I hadFOIA requested my whole BG and have since left a message with the liasion to try and narrow the scope to the ROI.