USB-C has to be the industry’s favorite kind of port, and one benefit is that you may be able to use your phone’s charger as a controller’s cable.
The Huntsman is a batarang-shaped leverless controller with 12 main buttons—as well as two Hall effect analog sticks.
Consider the Yume Tanuki if you'd like a small leverless controller that still has some decent height to it.
The X-Move is a sequel to Haute42's modular controller that was nominated for an Evo award, and you can move some of its modules sideways.
The Rushbox Click has the most insane layout yet, and it could be the first 22 button leverless controller.
In its outrageous layout, the KBHX-01 MAX+ has 18 keys—most notably including four spacebars with enough surface area for comfy thumb presses.
The STK-T01 is a wireless arcade stick that has 11 main buttons, including a macro button that you can press with your thumb.
You should be able to order Akekon Dojo's Shinpuri regular or large case option with 24 or 30 mm buttons, depending on your hand size.
The Card 4.5 Tatami is a wide controller with two thumb keys, and its compact layout features mostly slanted keys for your comfort.