The Sinar brand is synonymous with Swiss precision and, along with Arca Swiss and Alpa, belongs to the photographic triquetry and holy trinity of large-format cameras from the land of cogged railways and melted cheese. The word is an acronym for "Still, Industrial, Nature, Architectural and Reproduction photography."
M.P.P., or Micro Precision Products, was a British manufacturer of optical accessories that dabbled in several related industries.
You're a reporter in the US in the twentieth century and you're wondering what kind of camera you should get. Actually, you don't have to. Graflex. Done, solved.
The USSR, the land of mud and wooden spoons, also produced its only line of wooden cameras, FKD, for several decades (I feel in my bones that the acronym means something, but I haven't looked up what).