The preceding list is an imperfect gathering of traditional Vorin symbolism associated with the Ten Essences. Bound together, these form the Double Eye of the Almighty, an eye with two pupils representing the creation of plants and creatures. This is also the basis for the hourglass shape that was often associated with the Knights Radiant.
Ancient scholars also placed the ten orders of Knights Radiant on this list, alongside the Heralds themselves, who each had a classical association with one of the numbers and Essences.
I'm not certain yet how the ten levels of Voidbinding or its cousin the Old Magic fit into this paradigm, if indeed they can. My research suggests that, indeed, there should be another series of abilities that is even more esoteric than the Voidbindings. Perhaps the Old Magic fits into those, though I am beginning to suspect that it is something entirely different.
Five groupings of fabrial have been discovered so far. The methods of their creation are carefully guarded by the artifabrian community, but they appear to be the work of dedicated scientists, as opposed to the more mystical Surgebindings once performed by the Knights Radiant.