I know everyone's tired of this, but . . .
. . . how 'bout a belly shot? I can tell more from those than anything when a corn's colors run the way of this one. Even though you're saying it's not a hybrid, it resembles the non albino creamsicle byproducts. A belly shot might reveal something. If all four corners of the black belly markings are sharp, it is likely pure corn. If two of the corners (usually upper or lower) are radiused, it's "could" be a hybrid. This is not official, but an indicator I used for many years. I used to breed many creamsicles and had lots of the black eyed byproducts of them for color and pattern comparisons.
I've seen totally normal corns with this coloration too so if it's not one of the caramel byproducts and doesn't have Emory's blood in its veins, it's probably just an off-color variation of nominate.