3D printed controllers can be quite charming, and 3D printing controllers often correlates with these controllers being made out of plastic.
If there's a most innovative award, the JTechWorkshop would definitely be a contender. Its leverless controllers have highly custom layouts.
The Glyph is a modular all-button controller that is available in layouts for games from Smash to Street Fighter.
The Neobox Core0 is a slim acrylic all-button controller that is here in order to serve your need for RGB LEDs.
The RaidenBox is a mini all-button controller that is made of acrylic & nylon and is inspired by the Flatbox & Snack Box Micro.
When not making wooden accessories for tech, StepUpSFF makes stuff like the Retro Lever-less Arcade Controller (also in WASD format).
The FightingBox Mini WASD controller allows you to choose the colors of its keycaps and switches as well as its LED settings.
No, your eyes aren't playing any tricks on you! The Yamacon indeed has elevated hand rests in an attempt to be the most ergonomic controller.
The Arashi by SaveYourGames comes with a Sanwa JLX joystick by default. It can also come in a Street Fighter 6, Sega 2P, or Vewlix layout.