Porn contains: sexy lingerie, amateur couple, horny couple, perfect ass, doggystyle, cum on ass, hard and rough sex, passionate sex, pov blowjob, perfect body, pink pussy.
Porn contains: doggystyle, doggystyle pov, deepthroat, extreme deepthroat, cowgirl, reverse cowgirl, sloppy blowjob, cum on face, cum in mouth, hard and rough sex, amateur couple.
I'm sure it's better to search for porn with tags rather than categories. Usually authors specify a few general categories and lots and lots of qualifying tags. Here's a list of the most popular amateur porn tags. Not enough? Below is a link to all the tags used on Hobby.porn.