AliExpress has some of the best leverless controllers out there, and it also sells other kinds of controllers that you should check out.
The Haute42 W-P1 is a sloped controller with an optional wireless connection, and it is available in white as well.
The Qanba Q4 Pro is a wireless fightstick with 11 Sanwa buttons, a carrying handle, and a magnetic quick-release panel.
If you don't like the Aolion Apex's ultra-low profile switches, you can simply swap them out with the included low profile switches.
The Ruby is a wireless controller with a left pinky button and bigger thumb buttons positioned with your fighting game success in mind.
The Vilcorn Y03 is a leverless replica of the FlexStrike, and you can enjoy its 15-button split layout with a wired or wireless connection.
The Mojhon Fight Master—which has buttons that vary in their levels of concavity, convexity, and flatness—has an optional wireless connection.
After the C16's immense success, Haute42 pleasantly surprised the FGC with the C16 Orange, which also upgrades the performance.
The Haute42 C-AS is a slim fightstick that lets you pick the joystick gate and button travel. It has optional analog sticks too.