I've cracked the code on a mirror mount arm for MY23 RHD vehicles (not NA, not ADAS). It cost me four different arms as a trial but I finally found the solution. The recommended arm places the mirror at a good height for use and leaves plenty of room for the cables.
Dashcam/mirror arm No 11, available on Aliexpress
here, is a drop in replacement for the D-tab arm supplied by Wolfbox in their OEM mount kit. You will still need the Wolfbox arm kit so you have the backing plate that screws onto the mirror. Once you have fitted the backing plate to the mirror, swap out the Wolfbox D-tab arm for arm #11. The ball head is the same size.
As noted earlier in this thread the screws that come in the Wolfbox arm kit are too long so the ball head is loose on the backing plate (disassembled pic for reference). It's the same problem with arm #11. Your choice is to either shorten the screws about 1.5mm (1/16"), or do as I did and make a packer to sit between the head and the backing plate. I used a piece of heavy card that will compress slightly as a vibration damper. Rubber sheet (e.g. inner tube) or silicone sheet would also work well. Again, this is a fault in the kit supplied by Wolfbox and nothing to do with the swapped arm.
Arm #11 is two-piece. Remove the #2 Phillips joining screw and attach the arm section to the windscreen screen. Attach the ball head and arm section to the mirror. Reassemble the two sections on the windscreen then install the screw from behind. This step is necessary because the arm has to rotate to engage the stud on the windscreen and the mirror is too long to do this as a complete assembly.
To tighten the screw use a stubby offset #2 Phillips, or a #2 bit and 1/4” ratchet wrench as I did (pic).
To remove the factory mirror wrap a leather riggers glove or similar heavy material around the arm to prevent damage, then grip it firmly with a set of multi-grips (slip-jaws, cobra pliers, etc.) and twist counter clockwise. The factory mirror arm is tight but take your time and grip firmly and it will come off. I put a few dabs of grease on the windscreen stud before fitting the new arm to make the job easier next time (hopefully not necessary..).
@Stu_Barnes If you communicate this arm info to Wolfbox they could package it in place of the D-tab arm as a MY23 Grenadier kit. They also need to supply a packer/gasket or shorter screws as