My take on the AMS wall bracket, as the ones I found around didn't fit my need.

As far as I can tell there is at least two styles of slots in the back of the AMS, this will fit all the slots on the kind with the foot out of the way (green arrow, new version) and you can install it in the outside slots or the middle slots. The AMS with the foot protruding half way in the slot (red arrows, old version), it will only fit the middle slots. See pictures.

The piece that goes in the AMS is 50mm wide.

Distance needed between top and bottom holes is 180mm.

They don't fit the whole slot so the distance between them doesn't need to be precise.

For the outside install they need to be apart between 243mm and 258mm hole to hole.

For the lid to fully open, the flat where the AMS sits needs to be at least 390mm away from whatever it sits under.

Screw holes are 4mm in diameter with a 20mm recess, I used a ¾" washer and a #10x1" screw (that might differ for you).

I printed it in PETG for longevity, PLA is not recommended as it will deform over time, and this is supporting about 8kg…

I hope it will fit your need ;) .STEP and Fusion files are available in case you want to remix it…