All my HDMI cords are now sorted by length and connector combo (full HDMI, micro, mini) and hung up on the inside of my closet door and this is so much nicer than cramming them into various drawers! Next up: USB

How did you segregate HDMI version / bandwidth support? Is there any way to even tell, looking at a cable?

Most of mine don't have any markings. I doubt I have any of the oldest type at all anymore, and everything from the second gen onward is good enough for 1080 so I don't really care about the differences beyond that right now. USB on the other hand is quite a mess.

I now have a display high enough resolution it needs HDMI 2.1 cables so am slowly getting some. Tempted just to throw out all the old cables but that seems wasteful. I should put tape labels on them or something; really dumb they aren't labelled. USB 3.0 and USB Type-C, hooboy.