Somewhat. A few classes care about them, but it's mostly a subclass thing, like Eldritch Knights, the PHB Wizard subclasses, Arcane Tricksters.Do the spell schools still matter mechanically?
actually, death os about dyingDeath is about killing.
The dead are about the influence of those who exist in a new form of nature, including those who are the corpses of dust and the breaths of wind.
True Resurrection and Clone are examples of creating a new body. For example, if the original body exists but is irretrievable, then there would be two bodies (thus two ki lifeforce aura that cling to each body), but the disembodied mind (being the consciousness and self of the soul) unites with only one of them. There is no actual need to destroy the original body.
To remove a disease by pulling it out as ooze, or simply sweating it out or via urine or feces, is fine. Maybe for the sake of the story, yuckier imagery is more visceral and fun.
Healing damage such as a missing limb has nothing to do with death or destruction.
Except when medicine doesnt work that way, such as by creating prosthetic limb or supplying a missing hormone, nutrient, or other chemical agent, or by supplying "good" bacteria for the healthy ecosystem of the gut.
Killing bacteria and gaining assistance from undead souls ... are dissimilar concepts.
Neither are carnivores who eat meat the same thing as undead. Nor are Fighters who kill in combat the same thing as undead.
Necromancy is more specifically about dangerous magic, including undead, fiend, and the "Necronomicon".
How do they work in Elden Ring?Elden Ring is the best example of spell schools in contemporary fantasy imo
That seems more conjuration or evocation to me, not enchantment.All of the Power Word spells are enchantment. It’s the words of creation, speaking thought into being.
Conjuration is usually transporting existing things from one place to another, not creating new things ex nihlo. Evocation is the same, but with elemental energy rather than matter. Words of power are neither. They’re the “coding language” of the multiverse, programming reality to function according to your design.That seems more conjuration or evocation to me, not enchantment.
This is not accurate. Enchantment is affecting the minds of others and controlling their behavior.Conjuration is usually transporting existing things from one place to another, not creating new things ex nihlo. Evocation is the same, but with elemental energy rather than matter. Words of power are neither. They’re the “coding language” of the multiverse, programming reality to function according to your design.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.