FYI, SmartThings just released their Matter Edge drivers on their github. So we have a better picture now of which Matter devices SmartThings will support. Locks, media players (sound and/or video), sensors (contact, humidity, illuminance, motion, temperature), lights (binary, level, temperature, color) thermostats, and window covering. Connected to SmartThings via Android, Thread and Wifi. It looks like they have some kind of flag in the background to actually enable them to be added, though.