Manage Layouts will list all layouts in the file. A column in the window will show the name of the table occurrence.
With FileMaker Advanced's Database Design Report and third party tools such as Base Elements or FileMaker Inspector, you can get a better report where you can see how/where a table occurrence is referenced--not only what layouts, but all other references to that TO.
There are three tools at the market that will analys your solution so that you get a very good overview of your whole solution. They are all based on the DDR (Database Design Report) that you can get form using FileMaker Pro Advanced.
I am a big fan of Base Elements, but they all have there advantages