Just saw this Mike, and in my computer background but we used to use quite a bit of “J-Channel” inside of the cabinets for cable management. Go to Amazon and enter “ J Channel Raceway” in the search window. Try searching for it on Google, too, because they come in a bunch of sizes and lengths (colors, too!)
I would give you a link but my phone is barfing on my “cut ans paste” ability right now - sorry...
It may not be what you want, but it seemed like an easy solution.
Good Luck!