The platform that an arcade controller works on may be a lead factor in your decision regarding whether or not to buy that controller.
From the United Kingdom with love, the BentoBox Arcade Pad features Kailh Choc V2 switches, RGB LED, and the capability of custom art.
This addon for the Legends Pinball machine by AtGames can also be used as a standalone PC arcade stick if desired.
This controller can be ordered in several colors, whether that is for the enclosure or the keycaps. It is also available in WASD format.
The SYGBox by SaveYourGames is a 3D printed controller that lets you choose button and cable colors as well as the PCB.
The Mavercade Heavyweight is the Francis Ngannou of fightsticks—as it allows you to throw punches with some weight!
As expected, the VM6 by ASI is a class act and can be ordered in fightstick or WASD formats with custom art.
This arcade stick console that resembles the 8BitDo Arcade Stick can be ordered in different colors and memories with or without games.
The Pinebox is a stickless controller that is made of pinewood and is also available in a Super Smash Bros layout.