The Zeiss Ikon S 312 Contessa with rangefinder or the S 310 zone focus model are very small cameras. They are aperture priority and share the same Tessar lens.
This model also was marketed as the Voigtlander VF101.
For folders, there is the Zeiss Ikon Contina II with uncoupled rangefinder and the Zeiss Ikon Contessa -- an exquisitely overengineered camera.
Also, what many believe to be the best folding Retina ever made, the Kodak Retina IIa.