UBPorts has just released Ubuntu Touch 20.04 OTA-3 based on Ubuntu 20.04 LTS with the latest security updates and beta support for PinePhone, PinePhone
Those are recommended either because the companies (e.g. Volla and Fairphone) are directly involved in the development, or some devices (Google) are supported by maintainers with a good long-term track record.
Why are there no Linux versions for more available, higher end devices?
From the article:
Those are recommended either because the companies (e.g. Volla and Fairphone) are directly involved in the development, or some devices (Google) are supported by maintainers with a good long-term track record.