In the 5th Edition description of detect magic, it states:
...you can use your action to see a faint aura around any visible creature or object in the area that bears magic, and you learn its school of magic, if any.
The sensing of auras has been pretty universal throughout many editions of D&D. In a campaign I'm building, the schools of magic will play an important role. Each school is represented by a color, is diametrically opposed to another, and so forth. Because of this, I'd like to adjust my descriptions accordingly. Instead of:
The wand radiates Enchantment and some Necromancy.
The wand is glowing orange with black veins pulsing to the beat of some unknown heart.
However, in all my research, I've never seen a list where magic items have been matched up to the aura they radiate. Some I could guess as being what spell they replicate, but there are too many that wouldn't match up easily.
I understand that the description states, "...learn its school of magic, if any." I would prefer not to rule, "If it doesn't cast a spell, it doesn't have a school of magic." That just seems like a cop out, but it may be the only answer.
I'm not asking for how to match items up; that would be opinion-based and likely "needs focus". I am asking for something WotC (or an affiliate) has put out with a table/ruling. Obviously, if the list came from an older edition, things won't match up exactly, but would give me a good starting point. And if it turns out, that non-spell casting items have no school, then so be it.