Admin tool or (other method) to identify all OTBI Subject Areas that my company can access

Summary:

Is there an admin tool (or other method) to identify all OTBI Subject Areas that my company can access?

Content (please ensure you mask any confidential information):

Short of attempting to build an OTBI report off each Subject Areas, and then watching if it returns data or fails, we'd like to know if there is a way to identify all Subject Areas that our report developers at the company have access to. If these are restricted at the security role level only(?), is there a mapping somewhere that we can leverage to still come up with an overall list that shows all Subject Areas we can build reporting off of?