Controllers that have LED support usually have lights that can shine around their buttons or through their sides as well.
The DuelPad A16 is an acrylic controller that has 16 buttons with LED support and even comes with a modern console port.
The Ruyi Box is a stickless controller with 18 face buttons curved quite interestingly as well as two analog sticks.
The button layout of the Meisterbox M from Bavaria is supposed to make it the most ergonomic fighting game controller.
The Haute42 B16 is a larger version of the Haute Board Mini, and this time, it also has more keys, giving it a dual layout.
The SparrowG21 is the final boss of mini leverless controllers—with a plethora of buttons, keys, pins, and even joysticks!
It seems that DOIO took its creative liberties with the spacing of the KBGM-H03's buttons, especially the uppermost button.
The QRD Maestro S3 can either work wirelessly or with a wired connection, depending on your preference when you play.
The Haute42 S16 is a small & slim stickless controller with more buttons than usual, and the S13 edition has less buttons.