I’ve been testing the Aqara Matter P2 Door Window Sensor with the beta Matter binding. It works with no issue for me. And I bought a cheap Matter Door Window Sensor from Aliexpress that also works. These are Matter over Thread, so you will need a Thread Border Router. But you may already have that. Some of the Amazon Echo devices have built in TBR’s, and some of the Google speakers and displays and Apple TV’s have a TBR. If you have one of those, no need for any dongle.
This is not trivial to set up, you need to follow the instructions carefully in the Matter beta binding page, and you can expect a few issues here and there. But the future appears to be Matter. It’s really nice to have interoperabiility with Apple Homekit, Alexa, Google..