My hope was that some sort of logic was already in use. As an example Sonos, Apple and several other vendors use the next 2 hexadecimal numbers to identify the model. I was hoping Espressif also had such a scheme so that a more detailed identification could be made.

I have to ID a lot of devices on networks using only the MAC addresses of those devices. Do Espressif device MAC addresses have identifiers (past the OUI) to determine which Espressif device it is? Is there a Espressif MAC address decoder ring for devices?