Shoujo Kakumei Utena, Simoun Recommendations
Both animes have very deep character development, unique style and, of course, gorgeous music.
Stylistic background art, complex interpersonal relationships, abstract plot points, and themes of adolescence.
Both anime are mature, insightful, and offer a lot of character depth.
Two animes that detail *tons* of themes (oft similar, such as gender, sexuality, love etc) with a slice-of-life backdrop that use action sequences when appropriate. The amount of depth to characters in these shows is very similar. Simoun is much more light-hearted than Utena despite forgoing comic relief episodes.