Matching lenses, eh? Matching in what respect and how closely?
I ask because Graflex -- you brought them into the discussion -- made more than one focusing scale for every nominal focal length offered for Graphics. This because not all lenses of the same nominal focal length have the same focal length.
This isn't a matter of poor quality control. Once upon a time I bought 20 38/4.5 Biogons that were mounted in AGI F135 aerial cameras. I extracted the lenses, noticed that each one was marked with its measured focal length, to 0.1 mm, and flange-to-film distance at infinity, to 0.01 mm. Focal lengths ranged from 38.3 mm to 38.8 mm. Don't be surprised, per Zeiss the 38/4.5 Biogon's design focal length is 38.5 mm. Each lens had its own shim, marked with the lens' serial number, to focus it to infinity.
As they say, nothing is perfect. If you need matched lenses you're going to have to buy many and select carefully. And if a stereo camera, why three lenses?
Hint: Hikari suggested Mamiya TLR lenses. The viewing lens is a taking lens in barrel and its cells will go into a shutter just like the one the taking lens is. Lenses in a pair -- one for taking, the other for viewing -- are matched on focal length. So there are the matched taking lenses a stereo camera would need.