In the CMS, you can recognize users imported from AD by the Is domain user check-box on a user’s General tab, as you can see in the screenshot below.
When editing roles, you can see the Is domain role check-box, which has the same meaning for roles.
These check-boxes reflect the values of the following Boolean fields in the database tables:
|•||CMS_User -> UserIsDomain|
|•||CMS_Role -> RoleIs Domain|