Does anyone have a macro Heal/Target a Group Member with the least amount of health
Can’t be done. No macro can know what any group members health is. Blizzard wants you the player making that decision not a mod or a macro.
You have to make judgment in your own. Back in the days, people use Spell (Rank) like in Vannila Classic to heal Party or Raid because Mana Management were an issue If you use Higher Spell Rank