pathfinder

So I'll admit, I've never actually played Pathfinder 2e. I've been GMing it for over a year now, but I've never seen it from in front of the GM's screen. So my knowledge of things that primarily affect players, like what spells are on which spell list, is not as strong. But I did look up the official descriptions, which are:

Divine The power of the divine is steeped in faith, the unseen, and belief in a power source from beyond the Material Plane. Clerics are the most iconic divine spellcasters, beseeching the gods to grant them their magic. Divine sorcerers can use the blood of their celestial or fiendish ancestors as a divine conduit, and champions call upon their gods to grant them martial prowess through divine guidance.

Occult The practitioners of occult traditions seek to understand the unexplainable, categorize the bizarre, and otherwise access the ephemeral in a systematic way. Bards are the most iconic occult spellcasters, collecting strange esoterica and using their performances to influence the mind or elevate the soul, and occult sorcerers strive to understand the mysterious power in their blood.

Which definitely reinforces my belief that a necromancer should be occult. They don't beseech the gods anything, they learn to manipulate magic to do their bidding in strange ways.

I don't put much stock in tradition with spell schools/traditions. I have never liked that raising undead is so often treated as the same type of magic as bringing your allies back to life.