Poetry is the lowest realm.

It's hard to say whose realm is high and whose realm is low. Most of them are not of the same era, so there is no way to compare them.

However, judging from the influence of literary achievements and literary history, several people are slightly different.

For example, Zhang Dai is obviously a junior, just a scholar who writes prose.

Liu Yuxi's achievements in poetry are very high, but others are slightly worse.

Liu Zongyuan's poems and essays are very successful and have a great influence on later generations.

Fan Zhongyan's political achievements and literature are very good, but there are not many works, almost worse than Liu Zongyuan and Liu Yuxi.

Su Shi should be the most accomplished and influential, and he is also a great genius, with great achievements in poetry, calligraphy and painting, and even various miscellaneous studies.