If the various KMC chains were marked for which specific chains they are, that would be quite helpful too.
KMC chains are marked with at least the primary model name on each side plate, at least on the two of which I have experience, Z8 and X8.
But I suspect you mean to say, "If the various KMC
quicklinks were marked for which specific chains they are, that would be quite helpful too." A list on the packaging would be sufficient for dealers and cyclists to put their hands on the right quicklink.