Simple healing UI that can potentially cut down on using massive Weak aura suites that track each and every spell.
BenikUI and Shadows and Light are used, but BenikUI is recommended for the Large Health Percentage Font.
I use Masque: Darkscail for my Actionbars and Buffs/Debuffs, OmniCC for Cooldown text and Plater for my nameplates.
Please feel free to customise this however you wish, I know it won't be for everyone but so long as it's a decent template for you to start with that's the main thing.