differentiating between healing magic and necromancy by making them phenomonologically distinct is Exactly The Problem I Am Railing Against!
This is an especially fun debate in a Dungeons & Dragons context because the game’s schools of magic are structured in such a way that healing magic could plausibly fall into like six out of eight of them, and its placement keeps wandering from edition to edition. Healing magic has historically been Transmutation, Necromancy and Evocation, and I think the forthcoming it’s-not-a-new-edition-we-swear is shuffling it over to Abjuration for some reason, which has several fascinating implications. I think they should just bite the bullet and give every school of magic its own distinct healing spell, see what happens.