I can share some insights about using custom fields on your inventory items, nomoreptteachmt.

QuickBooks lets you add custom fields to your inventory items to track important information. However, these fields won't sort your reports.

When you mark the Trans and List fields on the Define Fields window, you'll be able to see them on the report. And, they appear on the Custom Fields list for your products and services. 

You can refer to this link to learn how to use them on your reports: Create and use custom fields in QuickBooks Desktop. It has detailed steps and screenshots for your visual guide.

I'm also adding this article to help manage columns and filters on your reports: Customize reports in QuickBooks Desktop.

Stay in touch if you need additional information by commenting below. I'll be right here to help manage your inventory reports in QuickBooks.