Ecchi and/or harem (including reverse harem) series with at least a 9.0 rating (and a minimum of 100 votes) that aren’t otherwise classified as shoujo, josei, shounen, or seinen.
BL and GL series are in their own lists.
Subject to change as ratings change.
Other 9.5+ lists:
https://www.mangago.me/home/mangalist/2444195/ 
Scream Queen