Junkfood Custom Arcades came up with the SWORL to solve the Snack Box Micro's limitation of only being for fighting games.
The Atachon Angel has split wings that allow you to set the sides of the controller farther apart than usual if you want.
The Octopus Arcade Fight Stick by TR Fight Stick may be considered a spiritual successor to the legendary Sega Dreamcast HKT-7300.
The Mayflash F700 FLAT Elite is a decently sized controller with Sanwa buttons, including extra buttons for fighting game mechanics.
The BattleHut V16B combines ergonomics, luxury, and size into an unbeatable package that may take your game from A tier to S tier.
The BnB Gen 3 has a modular design that allows you to switch between top panel layouts without needing to buy a whole new case.
With the F500 FLAT Elite, Mayflash brings back the same leverless goodness of the F500 FLAT, but this time with premium Sanwa buttons.
The Leme Tech Mini is so small, yet it provides Melee players three modifiers instead of the C-stick, reimagining wavedashes and Firefoxes.