It might be of interest to some that there is definitely one older jet transport than does not have a published Vmca...Caravelle.
I - SUD AVIATION Caravelle SE 210 Model I (Transport Category), approved April 8, 1959
Engines 2 Rolls-Royce Avon 522 turbojets
Airspeed limits (CAS) Knots
Vne (Never exceed) 325 or Mach 0.81 whichever is the lesser
Vno (Normal operation) 300 or Mach 0.77 whichever is the lesser
Va (Maneuvering) 174
Vfe (Flaps down 0° to 10°) 258
Vfe (Flaps down 10° to 20°) 202
Vfe (Flaps down 20° to 35°) 190
Vlo (Landing gear operation) 180
Vle (Landing gear extended) 218
Vllo (Landing light extension 215
Air brake operation 306 or Mach 0.81
Air brake extended 306 or Mach 0.81
Vmc (Minimum control) Less than the stalling speed