Your answer is completely off the mark.
When you use iPhone offload app it does not move it to cloud storage. It also does not remove the documents and data used It does not move that to cloud storage either. It deletes the installed program and in case you want to use it again you install it from the App Store It leaves the data in place, on the phone so that if you install again it should be ready as you left
Also “the ring app does not take up much space” Is not true. I have iPhone. I do not even own a ring device so there are no videos of mine stored on the phone or in the cloud. However the app takes about 200mb and is using another 1.26 gb of space for “data and documents”. That is actually quite a bit of space.
These are probably cached files or videos I see in the news feed from my neighborhood.
Please send feedback for the app to have a clear cache button.
Your answer about offload apps from iPhone was just incorrect. Please do. It mark it as accepted answer.
iOS users in order to clear that extra space you have to delete the app from the phone and the install it again and log in from scratch. This will clear the data storage used until Ring wakes up and joins every decent app from the last 30 years and gives you a delete / clear cache button.