When viewing the People >> Admins >> Active list, you will see other admins' usernames (with the exception of the special Account Admin, of course.), but you will not see your own admin listed.
The full admin list can be used to bulk-edit admin permissions or make admins "Inactive" or "Active". Of course, no admin can ever change their own access rights to Omnilert, as that would be a security issue.
So, you will not see your own username listed in the admin list. If you need to edit your own profile info or change your password, you may do so on the My Profile page.