If you can put up with carrying them around, heavy controllers can be great for staying stable on your desk or even your lap.
You can use the Hori Arcade Classic Pro's ball-top joystick, rotary joystick, trackball, and spinner modules with your right or left hand.
The HauteBox One is a wireless split-layout controller with lever and leverless modules that are interchangeable.
The Mixbox 2 improves upon the first Mixbox by having three layouts in one: WASD, leverless, and hitstick layouts.
Compared to its predecessor, one of the BHT2's right thumb buttons has been repositioned, and its left thumb button became circular.
The Qanba Q4 Pro is a wireless fightstick with 11 Sanwa buttons, a carrying handle, and a magnetic quick-release panel.
The Furaipan by Akekon Dojo is essentially a frying pan with Sanwa buttons. Other options include a Sanwa lever edition.
You can enjoy the Varmilo JZA1's outrageous 19-button layout with a wired or wireless connection, and it's available in other artworks too.
The Haute42 C-AS is a slim fightstick that lets you pick the joystick gate and button travel. It has optional analog sticks too.