Ipaxalon examines the unconscious and surrendered prisoners and their equipment one by one under arcane sight and (for thoroughness) enchantment sight. He concentrates briefly on each to detect spells and innate spell-like abilities (which Ipaxalon hopes includes "serve as a vessel for an Archon" but there's no guaranteeing that qualifies as spell-like) as well as lingering auras. He will attempt to puzzle out the function of the latter if he notices any; he's unfamiliar with this new style of magic, but that is not exactly a new experience for him.

There's a few weapons that have faint traces of universal magic - one of the Furies's bows, one of the other one's swords, and the Spear's spear, but none of the armor or shields. The ugly-looking spiked sword Jagged Remedy wielded is stronger - moderate enchantment, faint necromancy.

As for the people themselves, almost all of them are completely clean.

Unfortunately only almost. The Scarlet Fury who genuinely intended to surrender and stay surrendered has a strong aura of divination on her; not spellcasting, not an active spell, an item aura except bound to her. A slinger who was one of the first to run and, when that didn't work, first to surrender, is the same, but only a moderate aura.

Jagged Remedy has a strong aura of that kind, and also a faint divine spellcasting aura.

The Crimson Spear has no magic on him at all. Yep. Definitely.

A divine spellcasting aura is indicative of granted powers. If the source is Nerat, that puts Archons on par with demigods and raises his threat estimate of them significantly. There's no guarantee this works like it does at home, though. And the fact that mages can use magic derived from Archons seemingly without those Archons' knowledge or consent suggests that it doesn't.

Do the Unbroken have any mages willing to be examined for comparison? 

Meanwhile, Ipaxalon will take the time to study the magical signatures of the weapons in depth. He starts with the faint universal auras, as they seem likely to be easiest to grasp and might turn out to be nearly the same, then the more complicated auras on Jagged Remedy's sword. With enough points of comparison, he can maybe puzzle out what the "item" auras on the Choristers are doing as well. 

(Between the arcane sight and the centuries of Spellcraft experience, he probably can.) 

No mages available here. Sages and Tidecasters had a duopoly on it.

The faint auras look to be pretty much ordinary +1 weapons, though these are maybe more like +1/2. Any arrow in the bow will get more force, the sword will bite deeper through armor, and both of them will resist corrosion, rot, and other damage. It's definitely harder to parse than what he's used to; the enchantments look grown more than crafted, like vines on a trellis he can't see. But they're not complicated; it takes him five or ten times longer than usual but it's not really in doubt that he'll work it out.

Jagged Remedy's sword is harder. He'll notice that even mundanely, it's higher-quality; most arms and armor here is good quality for the Bronze Age but not more, and this is genuinely up to a 'masterwork' standard. It looks rusty, but that's superficial, it's not flaking off or impacting the structure. And the magic on it has the general shape from the other sword, but it also, when it is used to kill or downs a target with sheer pain, heals the wielder and drives them into a supernatural rage, moving faster and shrugging off damage.

With those examples, it becomes clear that the item-like effects on the two Choristers are partly like the 'grown' enchantments and partly like normal enchanting. And the divine reading on Remedy is a bit 'grown' as well.