Controllers that have LED support usually have lights that can shine around their buttons or through their sides as well.
New Zealand's finest offers its Gen 2 V2.1 controller that is available in leverless, WASD, and fightstick editions.
The Slider by Junkfood Custom Arcades is a mini stickless controller with WASD keys, arcade buttons, and spacebar-like keys.
The Slimbox R5 is a thin all-buttons mini controller infused with Kailh & Gateron switches and comes with Brook or Pico PCB options.
The Furin FRS is the long awaited sequel that boasts modular capabilities and is available in leverless & WASD formats.
Qanba constantly innovates. This innovation has LED and comes in three editions, including a silent edition.
From the United Kingdom with love, the BentoBox Arcade Pad features Kailh Choc V2 switches, RGB LED, and the capability of custom art.
This fully customizable controller is also available in arcade stick format for those based in France or willing to ship from France.
The Jabslab Digital Combat Controller is a mini LED controller with customizable artwork and other included goodies.