This map of Flock cameras[0] is pretty neat. It actually utilizes OpenStreetMap data. It was controversial but at some point in the last decade OSM decided to allow annotating surveillance cameras. You can add all sorts of characteristics including what they're mounted to and which direction they're facing. As well as the manufacturer which is what that map is based on.

The open-source project Every Door has been a really convenient on-the-go tool for contributing these annotations[1]

[0] https://banishbigbrother.com/flock-camera-map/

[1] https://every-door.app/