I like the taxonomy you've outlined. It would be great if the Home Assistant org were to formalize something like it into levels with logos manufacturers could use in ads and packaging. It would help clarify products for users and, most importantly, provide an incentive for manufacturers toward more local-first interop.

It might be good to invert the order above and name the levels with something like Platinum, Gold, Silver to clearly signal better and best. Manufacturer's marketing people love having external compliance logos, especially manufacturers of commodity hardware.