Yes, I have seen and downloaded this chart. It's amazing!
But... I've also read folks to say in various threads in this forum (threads of the past found via googling stuff) that the 84mm is a little weird in that regard. Like that the 84mm models kept using the grooved corkscrew way later than 1991, for example. Or that the 84mm models continued using the awl with no sewing eye well into the 90s versus the mid 80s for the 91mm models. Stuff like that.
But with regard to the 84mm models, this kind of thing is usually mentioned by people in an "oh, by the way" sense. I haven't been able to find any dedicated discussion of the differences versus the 91mm line.
Makes me curious!