According to the Ring site, the Floodlight cam can be mounted vertically or horizontally. I believe this is an updated mount.
This is in the tech specs:
Floodlight Fixture
Integrated and Adjustable Floodlight. Floodlight Camera can be mounted on a Wall or Ceiling.
Regarding indoor cam: The mounting bracket can be moved from the bottom to the back of the camera. Also, the camera can be hung upside down (on the ceiling) and there is a setting in the app to reverse the view so you see the image properly.
Hope this helps.