Oracle EBS default users in database

Hi team,

Our database is version 12.1.0.2.0 and EBS version is 12.1.3 on RHEL 7.

I received task from our auditor to get a list of non person usernames from our EBS database. As i know i can list database default users by this query:

select username,default_tablespace, account_status,created from dba_users

where oracle_maintained = 'Y';

Could you please tell me how to obtain information about usernames which are default from EBS database?

Because as far as i know EBS creates its own application schemas on database level for various purposes. I need to locate all schemas which are used by EBS itself and to present them to auditor.