What Bixby said, and as most packs have mobs with identical names, the list isn't highly useful anyway.
The simple solution, because the game is clearly already trying, is to for enmity to calculate based on your subtarget.
Am I the only one that hates how the colors pulse? The pulsing makes me think I see an orange for a second, but in fact I have great lead on the target.
I would love a change where say
White - Target is attacking you and you have a solid hate lead.
Red - Target is attacking you and someone else is within 20% of your enmity.
Orange - Target is attacking someone else and you are within 10% of their enmity
Yellow - You have more than 50% of the tank's enmity.
Green - Safe zone, or do better, if you're a tank.