Rotation Sensor is used to detect 4 different directions in vertical position.  It could be applied to screen rotation functions for monitors.  Or any devices which need left/right towards 45 degrees detection, e.g. smart lock.

For the similarities and differences of each model based on the manufacturing process and other technical details, such as soldering methods, precautions, etc., please refer to the datasheet (downloadable on the page of each model).