As a morph breakdown for further evidence against a corn, we can immediately rule out many things. It's not an amel because it has black pigment. It's not a lavender because it's yellow. It's not an anery because the eyes are yellow. It's not a sunkissed; saddle shape is wrong plus thee head pattern wouldn't be absent, just modified. It's not diffused as the lateral patterning is completely intact. It's clearly not a motley or stripe because there's no modification to the dorsal patterning. It's not a single gene lava or dilute it hypo or ultra or ultramel. If it's a corn though some sort of hypo would definitely be at play as the snake is gray rather than black. Can't be ultramel anery to explain the excess yellow because the yellow is diffusely over the snake, plus the eyes are yellow. It's not a single gene caramel but it looks nothing like any amber or golddust I've ever seen anywhere.
We have a snake with yellow eyes, no head pattern but also no morphs that can modify a head pattern to such a degree, a gray snake with an even yellow wash to the whole body rather than concentrated like in corns, plus the deeply scalloped saddle edges mostly seen in non corns but especially in yellow rat snakes. Yellow rat snakes which lack head patterns, have yellow eyes, scalloped saddle edges, and start out a grayish color and turn yellow as they move from hatchling to juvenile.