If you’ve tried sorting your shape keys, you know full well how impossible that is in the default state of Blender.
But don’t be discouraged as Shape Key Collections gives forth that functionality for structure and stability in the form of folders!
So put your beloved shape keys in any folder you’d like, or their subfolder. Name them, sort them, find practicality and order.
This addon is present in our Master Shape Keys – https://inletzone.com/master-shape-keys-2
Category: Shape key folder management
Software: Blender 2.6x, 2.79, 2.83, 2.93, 3.x