Hi Randy,
To my knowledge there is currently not a way of accessing a complete list of what services belong to which feature classes, but I have seen an internal enhancement request to add this functionality. I don't have much more information to provide on when/if this will be implemented. If you create a support case, an analyst can attach you to the enhancement so you can monitor its status.
Additionally, submitting this request to the Ideas page is a good way to garner support.
-Calvin
