Off the top of my head:

-Kiki’s Delivery Service -Serial Experiments Lain -Nichijou -A Silent Voice -The Girl Who Leapt Through Time -Gunslinger Girl -Mobile Suit Gundam Wing -The Case of Hana & Alice

I may be wrong but I don’t recall any sexualizing in any of these. There is romantic elements but they are handled appropriately.

Feel free to correct me if I’m wrong on any of these!!! ^^