When using the Admin page to view who has access and at what level, clicking on the level 4 / leader level (/admin/users/list/leader) indicates users who are Admins and/or Moderators, there is the use of a shield icon;
I believe there is ambiguity here, because at a glance you cannot tell which is which. For example, does a single shield icon indicate Moderator, but two icons indicate Admin? It’s only if you hover over these icons that there is any affordance.
My suggestion would be to perhaps colour code them, perhaps gold / silver or any colour scheme really which indicates the level of hierarchy in these access levels, much like that already implemented to distinguish between the user levels (bronze, silver and gold etc)
On a very related note, as a hosted solution we often have members of the Discourse team/family add themselves to our installation to help resolve issues (thank you ) but they tend not to remove themselves aftewards - no massive issue with this, we trust you but it does mean at a glance that trying to recognise who is a member of the Discourse team and who are our Admins/Moderators is more tricky.
Could this page be perhaps grouped in some way, perhaps a horizontal line and then the list of Discourse staff at the bottom who have access, or, perhaps using the shield icons again, have a third colour which indicates Discourse staff?
Thanks for reading