If I have a cable that sucks, I don't bother tagging it. It just goes in the bin. If it doesn't list what its ratings are, I don't buy it. Why bother keeping cables that don't do what you need it to do? Why bother buying cables that don't fit your needs?
I'm far happier that I only have one charger in my backpack that works for practically all my portable electronics. I'm far happier I've got an extra power bank in my bag that works with one cable to charge practically all my portable electronics and can be charged by that one wall adapter. I'm far happier I have one dock cable on my desk that provides power/kvm/network to my work laptop, my personal laptop, my spouse's tablet, etc. Far better than having a dozen different cables for a dozen different devices.