Help with the sadistic keyboard shortcut file

Can someone help? Over the years, I seem to create new keyboard shortcut files. I put my name/ year.

Why do I do this? I don't know, but PS, seems to have 3 places to save new keyboard shortcuts, and it get very confusing in that box.

I now have 4 versions, and I don't know where t hey are on the hardrive and I don't even know which is the current right one.

To make matters worse, when I go to PS 2018 settings, I only see keyboard shortcuts primary, and keyboard shortcut not primary. What the  heck are these? And where are the descritive 4 I've made over the years.

The reason for all this is I want to delete the clutter and then get the best one from my desktop to my laptop as Adobe does not have an intuitive easy way in the cloud yet to synchronize all this.

I'm sure some Adobe engineer there sits in a dark room with a smile on his face..  Or some explanation for the madness of this.