Here are a few of my own suggestions:

@PaulaMaddox - new Transputer hardware
@wren6991 - designed the RISC-V cores in RP2350
@anmeisel - founded Permacomputing club in London
@yrabbit - open source for GW5 FPGAs
@didier - FPGA and Amiga goodness
@mntmn - OSHW Linux laptops