Well,in addition to the fighters, and the MD-80/90 series, the other American manufactured aircraft would include the Lockheed Jet Star, the Canadair Challenger, and the Boeing 727. Additionally at high altitude the DC-9-10 series could also exhibit deep stall, but not at lower altitudes. Apparently, the prototype Challenger (No. 1) was lost due to deep stall. Not a uniquely British phenomena.