Uneverything Layers are a measurement of size beyond the description of Everything Layers, and far beyond anything we can comprehend that we can't comprehend. For reference, an infinite amount of Everything Layers beyond countability or even the concept of numbers is what makes up the very first uneverything layer. With the exponential size gap between Everything Layers, it's hard to measure even the first Uneverything layer, let alone the second.
Uneverything layers, to show the size of them, is the gap between the first Alphasm iteration and Jim from the 0th uneverything layer (normal everything layers) to the very first uneverything layer. The difference in scale, entity power, and civilization technology is astounding between everything layers, let alone uneverything layers and other sizeal layers.