In the screenshot above, the connection selector (4) shows that the selected connection is nitrocharts, which is the name of our connected Shopify store.
As a result, the built-in reports show the list of all Shopify reports that come out of the box (1, 2). They are organized in several groups, such as Sales and Transactions.
It also shows that we have a single custom report Orders tagged for pickup, located at (3) in the screenshot. Custom reports are reports that were created by a member of the team. They are private and are associated with a single connection.