For either camera and shutters, a spray cleanser sprayed onto a toothbrush then scrub the camera. Finished, use a paper towel dampened with alcohol to wipe any remaining residue.
This won't hurt the leatherette on the Hasselblad. For the metal bits on the Cambo, same thing.
Glass, typical lens cleaner, microfiber cloth, lens tissue treatment.
I believe you can use a furniture polish on the bellows but I'd wait for someone with more experience on view cameras to chime in..