There are different types of controllers to play fighting games, and the types range from arcade sticks to leverless controllers (and beyond).
The G series of Haute42 controllers can come in 16, 13, or 12 button editions in order to cater to your needs.
Donte Wilson is your guy if you are looking for stickless wooden controllers that have stylish button LED.
The MakeStick Pro Crystal Edition is a transparent custom case that can also be colored, and custom art is an option as well.
The RaidenBox is a mini all-button controller that is made of acrylic & nylon and is inspired by the Flatbox & Snack Box Micro.
The PXN-008 is a sibling of the PXN-X8. It is made of ABS for the purposes of durability and being waterproof & resistant to fading.
The Steelbox is a mini stickless controller that has 14 buttons and switches, with the jump button being bigger than the rest.
The Paragon is a wooden stickless controller that has its own layout (unless you choose the standard layout).
The Caster Acrylic & Resin Fightstick DIY Enclosure by Raw Super Arcade comes in Vewlix, Noir, all button, and other layouts.