I‘ve heard PinePhone, so I need to a) tell you about one of my little projects, LinuxPhoneApps [1], and b) tell you that it allows to filter by programming language [2]. To date, most Rust apps we list use GTK, three use Kirigami (via Corrosion IIRC), and one uses iced.

[1] https://linuxphoneapps.org

[2] https://linuxphoneapps.org/programming-languages/rust/