Dilemma Max by BastardKB; It has an integrated RP2040 microcontroller chip and diodes and underglow leds came presoldered, so soldering the per-key LEDs and switches and assembling the trackpad and case took me close to 2 hours.
I'm still looking for a display to use on the left side.
Very cool. After getting the Kyria I really cannot imagine having anything other than this style thumb cluster/stagger.
Great to see that there are alternatives out there.