A WASD controller often has a combination of WASD keys on the left and arcade buttons on the right. Of course, there can be other variations as well.
The Furin FRS is the long awaited sequel that boasts modular capabilities and is available in leverless & WASD formats.
You can order or 3D print the MojuBox modular controller that can also be engraved with artwork to reflect your interests.
The Excellence controller comes in a whopping 20 variations! As the great George Bruno once said, "Pursue excellence, and excellence will pursue you."
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 OkiBoard is a leverless controller that adds to the arsenal of controllers coming from the United Kingdom.
The X8 is PXN's debut WASD-style controller that sports some interesting artwork which is refreshing to see.
The RAC-J800B, part of the J800 series, is an excellent all-button controller that is available in multiple variations.
Ultra Arcade's Standard series is a reasonable entry point into its customizable controllers, and there are Pro & Lite editions available.