A notable mention is https://ubports.com/en/ which is different from postmarketos in a sense that ubports uses old kernels with heavy patches. That means: good support for things, but difficult future.
PostmarketOS uses the newest kernels and tries to integrate their patches into mainline kernel, so that the reliability is maintained with all kernel developers.
I also have a mi10t! Broken, that is. Idk if you want to know bout it, but it falled down from my bycicle when I was at Sanremo and a car passed on top of it. Screen broken. Tankfully you could still see things and the touch was working, so I managed to get back home (≈100km). But then the next day it wouldn’t boot. His soul left me… He just stayed with me enought time to help me get home…
🥹