Even earlier biblical manuscripts, help clarify things so that we don't continue mistaking biblical history as the same as world history. Here are a few earlier kings than Nimrod. An extensive search has not been performed.
King Cainan (Kenan)...of Seth
And Cainan grew up and he was forty years old, and he became wise and had knowledge and skill in all wisdom, and he reigned over all the sons of men, and he led the sons of men to wisdom and knowledge; for Cainan was a very wise man and had understanding in all wisdom, and with his wisdom he ruled over spirits and daemons, And Cainan reigned over the whole earth, and he turned some of the sons of men to the service of God (Jasher 2:11, 14) Kenan is only three generations from (Adam & Eve) begat Seth begat Enosh begat Kenan.Enoch Was King
And they assembled in all, one hundred and thirty kings and princes, and they made Enoch king over them, and they were all under his power and command. And Enoch taught them wisdom, knowledge, and the ways of the Lord; and he made peace amongst them, and peace was throughout Earth during the life of Enoch. (Jasher 3:10-11)Methuselah Was King
And when Enoch had ascended into heaven, all the kings of the earth rose and took Methuselah his son and anointed him, and they caused him to reign over them in the place of his father. (Jasher 4:2 and chapter 3)Nimrod Was Not King By Himself
The children of Ham then went and appointed Nimrod to be a prince and a chief over them; while the children of Japheth appointed Pinhas to be a prince and a chief over them. And the children of Ham*appointed for themselves Yoqtan as their prince and chief. (Jerahmeel 28:1, pdf 59-60). *Ham should be Shem. This apparent error might also be another clue to the relationship between Shem & Ham. It doesn't take much to see that Ham is Hem and Shem is Hem also or Ham. Even in the Hebrew version, a word such as Shemuel becomes Samuel. I suspect we will find a clearer explanation of the connection. Oh the lies the lies.Which explains how some people were quickly able to rise.
Not in reality, but in our eyes. References:
Gaster, M,”The Chronicles Of Jerahmeel”, Or ZTbe Hebrew Bible Historiale. A Collection of Apocryphal And Pseudo-Epigpaphical Books Dealing With The History Of The World From The Creation To The Death Of Judas Maccabeus. (London: 1899) See UC#1661 for who Jerahmeel might be according to th Jewish-Christian Bible. Unknown, Jasher,”The Book Of Jasher,”Referred To In Joshua and Second Samuel, Translated from Original Hebrew Into English, Second Edition, (New York: 1840) Noah, M. M. & Gould, A. S.