For what it’s worth, Jetson at least has documentation, front ported / maintained patches, and some effort to upstream. It’s possible with only moderate effort

For what it’s worth, Jetson at least has documentation, front ported / maintained patches, and some effort to upstream. It’s possible with only moderate effort and no extensive non-OEM source modification to have an Orin NX running an OpenEmbedded based system using the OE4T recipes and a modern kernel, for example, something that isn’t really possible on most random label SBCs.