This is a model I made for my own uses, which was the Apple TV 4K (Gen3) to mount to my TV. I don't believe the holes on these mounts are standardized, but there's enough that you should be able to get a couple lined up. I had some requests to upload this from a Facebook group I shared it with so here it is. Feel free to remix. I printed in PLA, but PETG might have better longevity.