Hi iwinter,

Welcome to Community!  Having the ability to run a report with specific Supplier information is a great way to view the transaction history at a glance.  QuickBooks Online has the option to customize reports more specifically to your needs.  I'd be happy to assist! 

To include Journal Entries in the Transaction List by Supplier Report, follow these steps;

1. Select the Customize button in the top right corner

2. Choose the Date Range and then click on Filter. 

Here you can select a specific Supplier from the drop-down menu and a Transaction Type.  (I recommend having this set to All).

3. Click Run Report. 

The report should now list all transaction types including Journal Entries.  If you'd like to modify the report to show more information, click on the Small Gear icon at the top of the report and then select Show More.  Here you can add or remove items as you see fit.

If you need additional assistance or have any other questions or concerns, please feel free to reach back out.  We're here to help!