There was also the Micro-A which I found on some dev boards. I think the Arduino Due (Arm Cortex M3 chip) used one for the USB host port as well as an Atmel Arm uc board.

Also that weird, really small USB connector that was found on some early digital cameras. I think Kodak was a big user of it. Sorta looked like a narrower and taller version of the Mini-B. Maybe the Mini-AB but that doesn't look like it. I have one in my box at home.

Old digital cameras just used non standard usb shapes so they are almost impossible to find now.