Hey Chet,
Just to clarify...
I don't want to make the wrong assumption. Are you referring to your product list that is accessible via your seller's dashboard (screenshot below) ...?
If so, there is a button you can click to help hunt down an item if you haven't found that (screenshot below). That button will open an area where you can filter by product name, item # and/or narrow down by brand category.
Prior to today, it did not have the category option and had a few useless filter options that I removed. I cleaned things up a bit on that page this morning & can add other filter options there if you or anyone has additional suggestions.
When clicked:
If you were thinking something different, let me know.