Only one worth in the photo. And it is Nishiki. It's a good frame, maybe dirty but its a good bike. You can tell pretty easily in the photo because you also included the picture of the cranks. The other bikes in the photo used really cheap cranks. Its a single piece crank and spindle. Cheap cheap BAD!
The crank on Nishiki is broken into your bottom bracket, square spindle, crank arm with the screw to lock the arm into spindle. It's found on better quality bike. You got a good deal on the Nishiki. May need to replace the components including the headset. Still it is a good frame. You have a good eye.
Smilingcat

