Fuck it, biggest hentai subreddit list on the site because this sub is nsfw
Categorized into tier and/or applicable subcategory. Comment any new ones you have and I'll add them when I can.
**Ecchi:**
/r/Animewallpaper
/r/NSFWAnimeWallpaper
/r/animemidriff
/r/AlmostHentai
/r/OfficialSenpaiHeat
/r/AnimeLingerie
/r/Sukebei
/r/animelegs
/r/buttfangs
/r/skindentation
/r/HentaiCleavage
/r/UpskirtHentai
/r/ecchi
/r/ecchigifs
/r/thighdeology
/r/ZettaiRyouiki
/r/Ecchibondage
/r/Fitmoe
/r/fitdrawngirls
**Gaming/Shows:**
/r/NSFWgaming
/r/lewdgames
/r/rule34rainbowsix
/r/smashbros34
/r/starwarsnsfw
/r/ApexLegendsPorn
/r/ApexLegends_Porn
/r/ShinMegamiHentai
/r/JoJo34
/r/dota2smut
/r/FortniteR34
/r/grailwhores
/r/TfLewd
/r/riskofrule34
/r/thelostwoods
/r/MortalCumbat
/r/linkiscute
/r/linkisacutie
/r/jokeriscute
/r/ChurchOfTacumi
/r/ShinMegamiBoys
/r/spnati
/r/animalcrossingr34
/r/PokePorn
/r/Metroid34
/r/Rule34Overwatch
/r/DragaliaLewd
/r/DDLCRule34