Are there any desktop keyboards as quiet as Clevo's?

The keyboard on the Clevo B5100M (Sager NP5125) is nearly silent and I'd love a wired one like that for a desktop.

 

The Zippy WK-7380 (scissor-switch, same as the Clevo) might be very close:
Zippy WK-7380 vs. Dell 8115 (in Chinese, includes a dB graph)

Spoiler: Zippy WK-7380

Their actual business is in making the switches themselves, but they also made assembled keyboards in the past. These have the shortest travel of all tactile keyboards. That's my preference; short distance, yet physical feedback, unlike a pure dome.

If you prefer more travel, like a mechanical keyboard, yet do want silence then a (hard-core) hall-effect keyboard would be great:
NOS CSSR Contactless alphanumeric Hall-effect keyboard CONSUL 262 1990

Have to desolder the speaker first and use a serial-to-usb adapter, but after that it's a perfect solution ( with colour-coded key-caps). Only need to find the pc that goes with it and we're back in style:

Spoiler: Mera CM 7209 (1986)

Heck, they had 'Design' licked when Apple was still dozing along:

Spoiler: Macintosh II (1987)

 

I use the Corsair Strafe RGB MX Silent gaming keyboard. It has a USB through so that you can connect your mouse to the keyboard, and the palm rest can be removed if you don't want to use it.

I specifically bought it because whatever switches my old keyboard used (can't remember the model) were so loud that I was getting dirty looks from my wife.