There are five famous running scripts, among which Wang Xizhi's Preface to the Lanting Pavilion, Yan Zhenqing's My Nephew's Watch, Su Shi's Poems on Cold Food in Huangzhou, Wang Ran's Poems on Yuan Bo and Yang Ningshi's Poems on Jiuhua are also called "the five best running scripts in the world".
Four masters of regular script, Ou Yangxun, Yan Zhenqing, Liu Gongquan and Zhao Meng # 92; (according to the time of birth)!
The cursive scripts are Huai Su and Zhang Xu.
Because the representative of each font is different, we can't take the liberty to say who is the most accomplished! It can only be said that everyone has the greatest achievement in a certain font, and can't cover everything in general.
There are also people with different appreciation levels and angles, so some people like this and others like that, but we still can't say who is the most accomplished.
Be careful!