Platform & Solution Reports Search Report
Attached is a report which you can import into your console which will allow you to search the Reports section for certain/specific reports. This will allow you to input some filter criteria based upon the Solution name and/or the Description of the report to filter/limit your search results.
I've found this particularly useful for finding out what reports exist out-of-the-box for Inventory and Agent information before creating a new/custom report.
TIP: For your filter parameters, make sure you have a starting & ending % such as %Inventory%.