Now for those helms that require healing to be activated, such as Earthgore and Nightflame, does Leeching plate count as the healing required to proc those sets? I’m not sure if Leeching Plate counts as healing myself or something else healing me.

Earthgore
Set bonus
(1 item) Adds 4% Healing Done
(2 items) When you heal yourself or a group member that is under 50% Health, you conjure a pool of quenching blood underneath them, immediately removing all previous enemy placed effects, and healing the lowest Health group member in the area for 29700 Health over 10 seconds. This effect can occur once every 20 seconds.

Nightflame
Set bonus
(1 item) Adds 1096 Maximum Magicka
(2 items) When you heal yourself or an ally, you have a 20% chance to summon a totem for 6 seconds that heals you and your allies within 5 meters for 2460 Health every 1 second. This effect can occur once every 10 seconds.