Jon- Ideally, you group images into a folder, when you load shapes Tableau recognizes folders, displays glimpse of contents and the folder name. So in your case, assuming all highlighted ones are related place them in a folder.
My Custom Shapes folder
How it appears in Desktop,
Hope this helps.
so your saying these individual names i see are actually folder names and not file names?
Not sure, can you navigate to "Documents\My Tableau Repository\Shapes" to confirm?