Short answer = babes.
Paysite niche, content niche and cat you submit to should match:
bikini*cam is basically amateur/reality/bikini so if you used your babes/toy/bikini/amateur(?) content to promote it, the cat that I see it fitting is either bikinis or amateur (not babes or toys). If the girl looks too good (too much like a babe), then amateur is out
In other words, only cat you can submit to is bikinis. If I were you, I'd look for amateur/reality type content to promote this one instead.
The other babes/toys site is a pretty good match for your content but then you don't want to submit to the bikini niche cause the paysite has nada to do with bikinis. If the content is heavily into dildos you can go toys, but otherwise, babes.
Panties and softcore - either site you're lookin to promote isn't about either of those niches (bo*mbody is babes/hardcore) so those are definitely out.