Chart mode
Shape
Grid size
You don't need a square for every image. People pick from all 153, and the winners fill the 9 squares.
Axes
Name the thing each axis measures, not its ends: voters see “Spiciness: Mild” with every question. Pick a suggestion to set its scale too.
Try
How squares are namedAcross (left → right) Up (bottom → top) Bad / Underrated
Middle / Underrated
Good / Underrated
Bad / Middle
Middle
Good / Middle
Bad / Overrated
Middle / Overrated
Good / Overrated