That's a great list !!
Does it extend to the whole world of LGB?
And can mere mortals look up items in it?
It is just an Excel spreadsheet I started building about a decade ago, after discovering I'd bought three RhB two axle baggage cars

...... I decided I
really needed to understand what is already in my fleet before buying more RhB cars. It is basically only RhB rolling stock (plus a few other Swiss cars), and has been built up largely from the Gartenbahn Database web site, eBay listings and posts groups like this one.
As well as the primary line by line rolling stock spreadsheet, it has other tabs which I use to a loose watch on what prototypical train formations can be put together from what I already have, plus chronological list of all actual G scale purchases not just rolling stock.
it wasn't designed to shared and it does contain errors which gets corrected as I discover them.