Usually, Etsy has controllers sold by boutique stores based out of people’s homes, but occasionally, you can find mainstream controllers there.
To Live Is to Play is a store that sells this slim arcade stick compatible with Sanwa JLF PCB switches, including an adjustable shaft height.
The Huntsman is a batarang-shaped leverless controller with 12 main buttons—as well as two Hall effect analog sticks.
The Bishop|Select Opal is a more affordable version of the Maestro, and it's ergonomic—but not too ergonomic in a way that's unfamiliar.
The FightBox A10's silent Crown buttons allow you to perform at a high level without giving away your button presses to your nearby opponent.
Consider the Yume Tanuki if you'd like a small leverless controller that still has some decent height to it.
BD Retro Mods makes awesome lever and leverless controllers that you can enjoy with retro or modern games.
The Caster Portable can fit a Korean-inspired joystick and has more than eight buttons—plus an optional analog stick. What more do you need?
Ionic Impact is Swiss and offers DIY cases in lever & leverless formats, such as the Ionic and Doric Fightstick Cases.