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 am sorely tempted, but its unlikely my banking apps and very specific work 2fa app is anything but Apple and Android compatible. I am almost at the stage of getting a second phone for day to day, and keeping my old for specific apps