Who named the sixty-four hexagrams?

There is a saying that the sixty-four hexagrams of Zhouyi were painted by Fu, the classics were written, and the biographies were written by Confucius.

In the second method, the Eight Classics hexagrams were painted by Fu, and the Sixty-four hexagrams were deduced by King Wen. Moreover, he also wrote scriptures according to these sixty-four hexagrams, and all biographies were written by Confucius.

Therefore, it seems that the names of these hexagrams were either taken by Fuxi or Zhou Wenwang.

From a purely academic point of view, it is summed up by countless unknown fortune tellers in the long practice.