I did try Adagio (Composite Table 8.0C) using *IC Item w Additional, Category.
but it doesn't allow me to get quantities OH, on PO or on SO which are key to my report. Thanks, though!

I'm in "Kindergarten" as far as creating reports, so I haven't yet tried to "link", as Andrew suggests. My filter, which I call "Stock" is:
{Qty On Hand} +{Qty on PO} >1. I am not filtering on the Vendor item #.

I don't know how to create a link yet, so I'll have to try and figure it out!