> GrapheneOS - root or adb not supported, so no

Like the other poster said, you can get root on GOS. However it's highly ill advised and severely breaks the security model of devices. 99% of the time nobody, especially the average person, needs root on their phone (imo). Allowing that easily just opens up the average person to getting duped into getting their phone rocked with exploits and possibly persistent malware.

There is no reason that a lack of root access should be viewed as a negative within the context of GrapheneOS. In that case why even mention or choose GOS? Just choose an Android fork with poor security or a Linux phone with zero security instead.