1, the highest ranking is Song Huizong Evonne, the emperor in the middle and late Song Dynasty, and basically everyone is a calligrapher. Their level is not Qing Di touted by those sycophantic slaves in Qing Dynasty. Song Huizong, Song Qinzong, Song Gaozong and so on. There are calligraphy works handed down to later generations, all of which are top-notch.
2. Not counting the emperor, Qin Gui and Cai Jing, the two great treacherous court officials, are both prime ministers.