As Komodo mentioned, the content is completely specific to the person you subscribe to. If you found the content G or PG rated, a different woman might have something closer to X. The bikini barista I subscribed to has mostly nude videos, basically soft-core porn, but she also has a few videos of her performing oral sex on her BF, and of her inserting a toy into herself, so moving on past softcore.

I do agree it sucks that you can't preview content. Sometimes you can find OF reviews on particular providers so you know in advance