Anybody know what Wyze device would broadcast this SSID?

It is the Chime Pro. It broadcasts an SSID starting with wzap for the Video Doorbell Pro to connect to. You can verify this by unplugging your Chime for the VDBPro and the wzap SSID will disappear. Plug it back in and it will reappear.

There is not currently a setting you can select to hide the SSID of the Chime Pro, but at least now you know what device it is for.