Keep in mind that in our current definition, “version of” is just a generic parent for all the other types, not a very specific thing. For example, it’s what we use to link a pop song (or an opera!) in Spanish to its translated version in English.
The suggested generic work approach would also help in the trad/“folk” area. And even most very old works There the original work is often confused with a publication of a notation of the work. Or a much later arrangement of the work.