Tomorrow--or Saturday--we'll be testing the following:
1.) #TPLink Tapo Matter Compatible Smart Plug Mini
2.) #Aqara Door and Window Sensor P2
3.) #OREiN Matter Smart Light Bulbs
All state--on the box, even--that they are compatible with Apple Home, Google Home, Alexa, and SmartThings.
Considering what I know of Aqara to date--that being Aqara's fuckery customizing the zigbee on their devices so you had to use their hub--I am not exactly optimistic, but I am having fun.