Get Data from SharePoint not default Document library

Yes. When you initially connect to a SharePoint library, you are initially given a Source connection string that looks like this:

= SharePoint.Files("https://TenantName.sharepoint.com/sites/Reports", [ApiVersion = 15])

Change it to this:

= SharePoint.Contents("https://TenantName.sharepoint.com/sites/Reports", [ApiVersion = 15])

 Then you will see a listing simliar to this:

Shared Documents is the default library, but now you can click on the Table value for any folder and continue to drill down that way until you get to your files.

The only issue with this is you can only ultimately see one folder at a time. SharePoint.Files will allow you to work with many folders at a time. SharePoint.Contents only shows one.