I think you are onto something, However, I think that the relation is more encompassing than you realize. The chart in the Ars-Arcanum is not complete, it says so itself, besides, the on in WoR contains more info than the one in tWoK.
I believe that that together, a spren and a human bound in by a nahael bond contain the all the attainable attributes in the chart, with each bringing some of them. We know from the epigraphs in WoR that the members of the specific KR orders always seemed to share the same attributes, all the willshapers were unreliable, erratic and capricious. All the truthwatchers were quiet and secretive, all the windrunners were natural warriors, all the lightweavers were artistic, all the edgedancers were charitable, etc...
What I am saying is that specific spren would look for specific people that would complement them in such a way that taken together both, human and spren would complete the chart in the ars-arcanum. this means that two different spren could bind different people for the same result, thus ending with different but ultimately equal spren-human couples in the same KR order