Fellow redditor _jwe_ shared Wysteria, a 36-key split keyboard with encoder, display, per-key RGB – generated via Ergogen.
Introducing Wysteria, my new 36-key keyboard. One for home-office, and one for work. I'd spent a long time looking, and couldn't find an existing PCB that had exactly what I wanted, so generated my own in Ergogen. In particular, heavy pinky stagger and a lateral pinky, instead of a top-row pinky, and encoders – jwe.
The keyboard has working firmware for both QMK and ZMK (with nice!view support and batteries under the MCU).
Specs
36 keys
MX switches, hotswap
Pro Micro footprint
reversible PCB
per-key RGB
nice!nano/wireless/battery support
QMK/ZMK
Notes: v0.3 has the thumb cluster diode traces incorrectly. The ergogen files have been corrected, you may start with those.