Shoujo Kakumei Utena, Yuri!!! on ICE Recommendations
Both anime address themes of queerness in a respectful way. They both stay outside the traditional boundaries of the yaoi/yuri genres.
Yuri!!! On Ice was mainly popular not only due to the beautiful music and animation, but also because it showed how even an anime in the sports genre can show a healthy gay relationship between the two main characters, being Yuri and Viktor. Utena also does the same thing, and also explores many taboo or not-really-talked-about issues, like sexuality, gender, and puberty.
The show is far more serious and darker than YOI in terms of these themes, but it still shows how the main two characters, and even some side characters, feel about each other, and how their relationships change due to these