Approval Limit Matrix Report across modules

Summary: We are looking for a report which will take a username as a parameter and them report their approval limits across the various modules within Fusion (PO, AP, GL, Expenses, etc). From what I have seen around other specific module requests and seeing the configuration of rules in the front end for GL I think this will be a challenge.

We are coming up to our year end audit and our auditors have already touched on this area.

Is there a report or scheduled process that can report this, else is there some help around all the relevant tables, columns and joins available?