Comparison of the difficulty of emperor training plan (and four types of students in private schools such as champion)

The rookie is the most invincible, but there are several famous princesses when I play, and the chances are not much increased. The difficulty increases from right to left. Also, there is a model called "nightmare" in the top mold, which is quite difficult-anyway, I can't play at the age of 35, and lz can do it himself.