In User Administration, there is only a single flag for Administrator in the user list, however there are three administration roles. To find out who is an account administrator you have to check each account. Breaking this out for each administration role would make this much easier.
Thank you for your idea. One thing that is now possible is to filter by admin role. This would make it easier to find admins based on various roles assigned.
Given the ability to filter and historical feedback on this idea, we are unlikely to make changes here at this time. We hope you can understand.