What fonts were popular in calligraphy during the Southern and Northern Dynasties?

Calligraphy works of the Northern and Southern Dynasties are rarely circulated in the world. Generally speaking, what we see are rubbings of unearthed stone tablets. Stone tablets are mainly Wei Bei or official script or regular script, and we seldom see the fonts written on paper or silk. Someone just posted a set of pictures on Weibo. They look good, so I'll post them here for everyone to see. It is also rare. Feeling is the transition between official script and official script. The content is that there are many Buddhist scriptures, and the worship of Buddhism in Wei and Jin Dynasties is not as serious as that in the Southern and Northern Dynasties. At that time, people should write or write official documents in this font, which is quite different from the font after Sui and Tang Dynasties, unlike the popular small letters or elegant pavilions in Ming and Qing Dynasties.