KiCad boards from 4 GitHub repositories tagged “qitas”, the most starred first; open any of them in PCBKit.
SoCXin/GD32F350
L4 R4:GigaDevice Cortex-M4 108MHz MCU (GD32F350)
SoCXin/STM32H730
L6 R5:ST Cortex-M7 550MHz MCU (STM32H730)
grok-x/template
KiCad Template
OS-Q/B311
RP2040 硬件设计