Hey chrcollins–
The 3 member groups following Super Admins do not show up in the Edit File Upload Prefs restriction list because those three groups are Banned, Guests (which you’ve renamed Beholders), and Pending. Those are special member groups that already exist with a fresh installation, and the member management tool uses them to handle various member management tasks like registration and banning. Visitors to your site that aren’t logged in are automatically in the “Guests” group so that you have finer control over what they can see on the front-end.
However, members of those 3 groups cannot have access to upload files, so those groups don’t appear in the list.
Does that help?
Kevin