Sorry, you're asking someone who has never even used any sort of word or data processing program. I couldn't recognise a spreadsheet if my life depended on it. Others here should have some useful suggestions.
Remember too, there are going to be known and unknown variations in straps. Most of us know that pre-1990 bags attached with clips were available in 2 different lengths, but sometimes you'll find an oddball that isn't in the books. My NYC Rambler is shown in every catalog I've found as having a 43-inch long strap, but my 1986 or 1987 Rambler's strap is almost exactly 48 inches. I don't know how or why, but I'm glad it does because it might be the only original Rambler in existence with a strap long enough for me to comfortably wear cross-body.
And always watch for straps that have been shortened!
BTW, you might want to include these in that thread, from Coach's Fall 1983 catalog. If I find any more pages on their optional straps I'll post them here too.
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ETA - And although it's not about straps, this background information from 1982 does mention the solid brass buckles, and makes interesting reading too:
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