my favorites are, in no order,

futanari
pov
footjob/feet
fellatio
vampire
flat chest
eyepatch
dark skin

thats all the ones i remember

pov
fellatio
blowjob
paizuri
titfuck
angry
prostitution
schoolgirl
twintails
pigtails
pink_hair
red_hair
green_hair
blonde_hair
blue_hair
shika-hina
akushizu
sakura_haruno
samui
nami
sazaki_kaoruko
shidou_irina
rei_miyamoto
saya_takagi
...and many more :P

Paizuri
Anal
Huge Cock
Dark Skin
Huge Breasts
Futanari
Muscle
Tall Man
Thick Thighs
Huge Ass
There's not a tag for it, but I like intimate pictures where the guy is fully drawn and loving the girl.

i.imgur.com/LPpfgbO.png

Shota

autofellatio (super sexy and fun to do)
bondage
crazy
crazy eyes
draenei
futanari
Femdom
horsecock

Daddy!

Futanari
Futanaria (the few that we have here)
Milking Machine
Huge Cock
Huge Breasts
Curvy
Body Suit

That's all I can think of at the moment.