how to join ASE_USER_CATEGORY_B and PER_USERS tables to get the USER_CATEGORY in a BIP report?

Summary:

PER_USERS has the list of users and ASE_USER_CATEGORY_B has the list of user categories, is there a way to join them and figure out the user category?

PER_LDAP_USERS table might not be the correct table as it doesn't list all the service accounts.