Is your feature request related to a problem? Please describe.
Yes (in my opinion). Currently the icon resource packs are jumbled up with any other resource packs installed.

Describe the solution you'd like
This problem can be solved by renaming the resource packs in a format like this: "Simple Voice Chat - Black Icons", "Simple Voice Chat - White Icons", "Simple Voice Chat - Classic Icons".

Describe alternatives you've considered
Naming convention is up to you, but just start each icon pack with the same word or phrase so they are all ordered neatly together.

It does not seem to be possible to modify the order of builtin resource packs from their display name or ID: