Anyone Ever Figure Out Who Really Designs And Build the Kiseki Cartridges?

I am thinking of adding one more cartridge to my collection, well because I can. Back in the days that I got into analog, the arena of rarefied cartridgees was quite small. I remember offerings such as the Ortofon MC 200, Koetsu Rosewood, and the Kiseki cartridges. I never got a chance to experience the original Kiseki cartridges, heck I never got a chance to see one.

As you know, in 2011 these cartridges were reborn. I have never been able to read who actually designs and builds these cartridges. Oh I read the back stories on their page, and I am a bit put off by some of the "mystique" or hype surrounding certain build aspects. Diamonds polished by human hair? I dunno. But with that being said, I still want to own one, just to fill a long standing question of how does a Kiseki perform?

So I am tentatively planning on ordering a Purpleheart in the coming days. But like everyone else, I really wonder who designed and builds them. One thing I notice is the internal impedance is much higher than what is considered the top tier modern MC’s. The Koetsu are 5 ohms, ZYX 4 ohms, Ortofon A95 or Winfeld TI are 5 ohms, Lyra 8 ohms, Benz Micro wood 12 ohms. The Purpleheart is listed at 42 ohms, and the only higher internal impedance cartridges I find are from Hana, Clearaudio, a couple of the Denon, and that is it in a basic search.

Has anyone ever heard any credible information on who builds and designed this cartridge?

And out of curiosity, anyone ever heard of who builds the Sumiko Pearwood or the Palo Santos?