If your just starting HMs all of the early ones you with kill first are perf 2 heal fights.
Council: 3 2 healing is very double in the early stage of this fight but they end is healing intensive.
Ji-kun: 2 Some might say you need 3 but you don't need a healer flying with your main egg team just have 2 study dps fly and your good.
Megaera: 3 Can and probably the hardest to 2 heal will need Off heals like tranqs, vamp embrace to pull it off with the rampages.
Primordius: 3 2 healing you healers will need the buffs to help with raid damage.
Dark Animus: 2
Iron Qon: 3 Might be the only one where I would 3 heal on progression as it will be your 3rd or 4th HM you take down.
Lei Shen: 2