Welcome and thank you for posting here in the Community, @Phil Chase.
Allow me to help share information about exporting customer list in hierarchical view.
We can export customer list from QuickBooks Desktop (QBDT), however, we don't have the option to export the list in Hierarchical View. You may need to sort the exported list manually.
I want to ensure customers like you are having the best possible experience while working with QuickBooks. Since the option of exporting customer list in hierarchical view is not available as of the moment, I suggest sending feedback straight to our product engineers to be considered in the future updates.
To send you feedback.
To learn more about exporting reports, you may check this article: Export report from QuickBooks Desktop to Microsoft Excel.
Let me know if you have any other questions about exporting customer list, I'm always here to help you. Have a good one!
Do you mean just as the customer list is displayed with an indent, or do you mean seeing the Customer:Job in one field on each Job record?