One use-case scenario for 13 button controllers is a leverless controller that has one extra button for your left middle finger in an optional WASD layout.
The 8BitDo Arcade Controller Pro adds a left pinky button and brings the right thumb button closer to the jump button.
Given the sweltering success of the PadBox GS, Arkodd released the Platform Edition: half a rectangle with a D-pad and analog stick.
You can order the OKI Hatch Service Deck by JackWagon FightSticks in a lever or leverless format—yet its star feature is its hinged lid.
The Battle Grid is an aluminum controller with 13 buttons in a split layout and a bigger screen than usual.
The FightBox B-Pro is the head honcho of the B series, given that it's got 17 buttons—a good number to conquer tournaments.
You can buy Akekon Dojo's DP-5 regular or mini version with 11 or 13 buttons and at least three color options.
If New York is the concrete jungle where dreams come true, then the NY-box may be the controller that'll fulfill your dream of winning Evo!
The Powkiddy A50 is a budget option for if you would like to try the leverless or WASD layout—or need a light controller to travel with.