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.
Sorry but the pinephone is not great. I have one and its extremely underpowered to the point of uselessness.
Its like trying to use a 486 to as a current desktop.