Gherkin with Teensy LC instead of Pro Micro
It can be made to fit. Some pins should be omitted since they would short out the Teensy LC. This should also work for the Teensy 3.2
The LED circuit is connected to a pin and can be turned on and off, but it is not a PWM pin so no brightness control via PWM. The 5v for the LEDs will also need to be connected by jumper wire from VUSB.
I have tried it with TMK/Chibios. There is some problem with Action Map and Chibios, the tap modifiers are misbehaving. Will try a Teensy 3.2 with Kiibohd later.