If you need a complete list of Microsoft Excel sheet names, Microsoft Excel Power Query is fast and generates a dynamic list.

Learn how to combine Excel files with different sheet names using Power Query. Save time, reduce errors, and automate your data consolidation ...

This is the demonstration file to accompany the article, How to generate a list of Microsoft Excel sheet names by exposing Power Query metadata by Susan Harkins. From the hottest programming ...

But, you can use Excel to view files and folder details of a directory, which would be helpful to you to know at least the list of files and folders that were deleted.