I wanted to have something that we could use to hold the door open enough for the cat to access the room, but not the dogs. This is what I came up with. Stuck the base to the door with 3m command strips. The hinge is a binding screw post that I already had. This is the amazon link: https://www.amazon.com/gp/product/B07YZ9QLB5/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
These are way too long so you can get by with shorter ones.
To open door from either side just push on the holder, it is thin enough to move aside easily. Can flip-up and out of the way when not in use.
The author hasn't provided the model origin yet.