Hello there, @gpark1.
I'm here to help share information on how to customize the A/P Aging Detail Report to exclude the vendors paid with credit cards.
To exclude the vendors paid with credit cards, you just need to select the vendors you want to show on the report by going to the Vendor section.
- In the report's page, click on Customize beside Save customization.

- Click on Filter.

- Click on the drop-down arrow beside Vendor.
- Select the customer you want to show on the report by putting a check-mark beside the vendor's name.
- Click on Run Report.

You can also check this article for additional reference about customizing reports in QuickBooks Online: How to customize reports.
That should allow you to run the report and exclude the vendors paid with credit cards. Let me know if you have any other concerns about running reports, I'll be always here to help. Wishing you the best!