Complete List of Niches
 

I was wanting to make a list of every US legal niche in the adult market. I'll start with some and feel free to add.

Solo
blowjob
handjob
gangbang
threesome
ebony
latina
gay
lesbian
footjob
water sports
foreign
hentai
non nude
teen

Feel free to plug a site when listing.

Bump sex

We got nearly every legal niche covered over at Fetishopolis

asphyxiation
bastinado
bdsm
cbt
femdom
hot wax
mummification
enemas
needleplay
speculums
dbl. pen
fisting
foreign objects
glory holes
masturbation
oral sex
orgies/group sex
phone sex
sex in public
strap-ons
voyeur
mud wrestling
watersport
boot worship
furries
sleepy time
rubber/pvc
leather & latex
uniforms
adult diapers
bbw
branding
butt plugs
chastity belts
crossdressing
exhibitionism
lactating
preggers
shaving
skinny dippin'
smoking
smothering
tattoos & piercings
tickling
bisexual
hermaphrodites
transgender/she-males

...to name a few