Inconsistently handled body part groups in Humanlike

[NobodyImportant]

I was about to do some modding for apparel when i noticed that some things in the Humanlike def are off.
Shoulders are a separate body part group from both torso and arms.
This is extremely illogical since:
-Arm prostheses include the shoulder.
-The clavicle bone in the shoulder is contained in the torso.

This makes very little sense, as there are very few clothing items that would include both arms and
torso, and not cover the shoulders.
The neck has the similar problem, and while it makes sense to not include it with the Torso, it should be included with the FullHead group, as most helmets also mostly cover the neck too.

The most egregious problem is the shoulder though as it's handled in three separate ways throughout the game.