I claim the ornamental design for cooktop with graphically-simulated three-dimensional effect, as shown and described.
FIG. 1 is a top, left perspective view of a cooktop with graphically-simulated three-dimensional effect showing my new design; and,
FIG. 2 is a top plan view thereof.
The broken lines depicting the top portions of the cooking oven appliance in the views have been shown for the purpose of illustrating environmental features that form no part of the claimed design.
The broken lines comprised of dots and dashes that encircle the burner element represent the boundary between claimed and unclaimed subject matter.