This is a list of sites that have several flash/RPG maker h games or are just notable for h games.
Mangagmaer- The new localizers, have very few gameplay games. Their newer stuff is leagues better then their older translations.
J-ast/Jlist- The oldest current localization group. Very slow but has some big titles, including ones with gameplay.
dlsite- Has a lot of games and image sites, but very few in English, and even less with decent translations. Here is a notepad with all the English dlsite games with gameplay that I saw at a quick look, complete with genre.
hongfire.com- gets a new RPG maker project weekly, and has a lot of modding on Illusion’s titles. A few translation have started up here, but even less have finished or are in a good state.
lemmaisoft.renai.us- Has a member’s only adult section. A few games, this is where I found Aching Dreams 2nd.
newsground.com- Used to have a number of bad/stolen resources flash games, nowadays they still have a number of games(a few are even decent) but barely any new ones.
legendofkrystal.com- has a devoted flash community that has made a number of games with varied content.
ofBeatr- Kickstarter for adult stuff.
patreon- A newer site where you pay for subscriptions. Has a few hgames on it you can pay to play.