I couldn't find anything for this specific adapter, so I decided to learn a bit of 3d modelling and make one myself.
You still have access to the buttons on top, you just have to slide the adapter out a bit. Might add a small lip to the front just to help secure it a bit more so keep an eye out for a possible V2. May also make a double mount for a second adapter for 4 player enjoyment.
The author marked this model as their own original creation.