It's probably time consuming but you may be able to do some of it by looking in the Index page for each year of the old RadioShack catalogs at this site Radio Shack Catalogs - General Catalogs
That would show the RS stock (catalog number) number or SKU as well as the Pro number.
I know a couple of the Pro numbers were reused over the years but the differences in the actual capabilities were night and day apart.
You are correct in saying the Wiki here is not much help. I never really paid much attention but now see that the wiki does not always show the RS SKU number and only shows the PRO number.
Have you tried looking at the RIGPIX website? I think that's how the site is spelled plus there is another similar site with pictures and specs of most of the old RS scanner models. Not sure they show the old SKU numbers either but it's probably worth a look.