eNameplates 

This a nameplate addon that is extremely lightweight. It is a standalone version of my nameplates inside Elv's UI. Visit the ElvUI forums for support.

Options
-Display Health Text on NamePlates
-Enhanced Threat, instead of using nameplate border for threat colors, you can utilize the entire health bar for threat colors.
-Allow nameplates to overlap each other or not.
-Option to only display nameplates when in combat.
-Includes a nameplate Blacklist, so you can hide unwanted nameplates.

Setup
-All options are in the first 25 lines or so of the eNameplates.lua file. Use a text editing program such as Notepad ++ to edit the file. Threat colors will automatically adjust to your Role, for example if you are a Tank the good threat color will be green. Therefore mobs with threat will display as green. If you are a DPS/Healer the good color will be displayed on mobs you do not have threat on.

Credits
Dawn, Darth Android