Alternatively, the Reolink Doorbell cameras for anyone who doesn't want to be on the Unifi/Ubiquiti platform. Also I believe all these cameras provide a generic RTSP feed which can be consumed by any computer running Frigate[0], an open-source NVR/AI platform.
0: https://frigate.video
(Reolink, Unifi/Ubiquiti, and Frigate are all good solutions for anyone who is not interested in supporting the proliferation of a police-state)