Porn contains: point of view, real orgasm, pussy creampie, tight pussy, real couple, real amateur, big cock, tattoo, doggystyle, missionary, beautiful girl, dripping wet pussy.
Porn contains: pov blowjob, beautiful girl, public blowjob, real public sex, gonzo, big cumshot, big cock, slobbering blowjob, sloppy blowjob, cum on tits, cosplay.
Porn contains: slobbery blowjob, drooling, rough blowjob, deep blowjob, sexy blonde, tattoo, cum on face, facial, hard and rough sex, hard fuck, deepthroat.
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.