An arcade stick is a controller that often comes with a joystick on the left and buttons on the right. It can make many fighting games easier to play.
This is a budget controller that is available in many variations and is a decent option if you would like to try leverless controllers.
The Fighting Stick seems to be a sort of prototype for other Hori fightsticks such as the Fighting Stick Mini and the Fighting Stick Mini 4.
Ipega has graced the fighting game community with a mini fightstick, the Ipega-9136, that is even smaller than the standard mini fightstick, and it does a great job at this novel type of product.
The Martial 5in1 Arcade Fight Stick is yet another white-label arcade stick, but it may capture your interest regardless.
The Yusha Fight Stick is a mini fightstick that was specifically designed to dock the Nintendo Switch.
The F500 Elite brings you the same goodness you may have derived from the vanilla edition, but Sanwa parts are included with full force.
Ash Huang presents this controller that is available in leverless, WASD, fightstick, and custom formats with custom art as well.
This is an all-keys controller with keys that are straight instead of being slanted, but you can also request different layouts.