Razer has announced that its latest accessory for smartphone gaming, the Kishi, is now available to order. This model is designed to fit onto mobile devices of varying screen size to deliver Nintendo Switch-esque controls. It does so with a good range of options, thumbsticks that are also clickable included.
https://www.notebookcheck.net/Razer-releases-its-new-Kishi-universal-mobile-gaming-controller.469548.0.html
I wonder how this compares to the STKPlay controller. The design does look pretty good!