HDMI and display port are in a similar boat. Putting the spec on the connector would be so much help.
Even purchasing them is a nightmare these days because everything says ultra super duper fast supreme and then the fine print says it's actually just 3.0 (or doesn't say at all sometimes on online storefronts). Multiple time's I've found myself in the store flipping around the box like a rubics cube trying to find the little fine print that tells me if the cable is more expensive because it's gold plated snake oil or actually matches the higher spec I need.