Google Home
Matter controller: yes. “Prepare your smart home for Matter” — support.google.com
Matter version: not published; table lists per device type the spec version it came from, up to 1.3 (Doorbell, Chime, Electric Meter). Checked at developers.home.google.com
Zigbee radio: none; Google hub list names only Wi-Fi and Thread radios. Checked at support.google.com
Z-Wave radio: none; no Z-Wave radio named. Checked at support.google.com
Matter device types: 22 listed, 6 not listed or partial
Listed: on/off, dimmable, color temperature and extended color lights, on/off plug-in unit, on/off light switch, door lock, thermostat, window covering, fan, air purifier, air quality sensor, carbon monoxide detector, smoke detector, contact, occupancy, temperature, humidity, light, pressure, flow sensors, pump, speaker, dishwasher, laundry washer, robot vacuum cleaner, doorbell, chime, electric meter, electric utility meter, electrical energy tariff. “not all are fully supported” — developers.home.google.com
Not listed or partial: on/off light switch: can only be commissioned and deleted, no binding, door locks: remote and voice unlock disabled without PIN, cameras: not listed, EV chargers: not listed, refrigerators, ovens, dryers: not listed, device types not listed are not officially supported.
A Thread-capable hub is needed once devices mix Thread and Wi-Fi. A Matter bridge shows up as a Control Bridge device and its bridged devices appear as normal devices (developers.home.google.com).