lol you contacted the consulates about keyboards? XDXDXD
I'm uncertain who's still doing what in the business nowadays, but:
Datacomp, Costar - I suspect they're in bed together.
Qtronix - Hit or miss in terms of quality.
Strongman SMK - Could be out of the keyboard business for good, you can inquire.
Monterey - Not sure if they still do mechanical, and even if they do, I don't know if they do designs with Cherry.
TG3 - Buy American: high quality, very expensive.
TVS - Indian, unwilling thus far to export to the US, not sure if their board is self-made.
HCL Peripherals / Infosystems - Indian, again, not sure if they're an OEM.
There's also Chicony / NMB. Although I'm pretty sure NMB is out of mechanicals for good, Chicony still lists mechanical reference designs on their website.