Updated and added a second solution that includes the Multi-Row Formula tool. Attachment shows both solutions. Although the solution with the Multi-Row contains less tools, I think the first solution runs faster and uses less CPU.
I added in a bunch of unnecessary selects, but that was only to get the files organized in the beginning. Not necessary in the least, it all can be done with identifying the non-human readable names and/or renaming in the join tools, but that seemed like more work. A more elegant solution would have fewer tools, but this solution has a lot of symmetry which is good. Props to the tile tool for allowing this solution to scale.