Dream's list comprises of shows that are of manga origin. The reverse harem shows I watch are mostly of the otome game origin. I did try to see the differences between the two media when adapting into an anime series back in Reverse Harem based Otome Games: Their Anime/Manga Adaptations. All I found was that the otome games make bad anime and manga adaptations except for Alice in the Country of Hearts which has several manga adaptations that is ongoing to this day. There was a movie, but it wasn't so successful.