Who wrote the most influential lex luthor storylines?

The source material supplied includes details about Superman’s creation and Thor as a known entity, but it does not mention Lex Luthor or any comic writer associated with him. Therefore, based on the verified facts available, we cannot identify who wrote the most influential Lex Luthor storylines. For a definitive answer, additional reliable sources that discuss Lex Luthor’s publication history and key writers would be required.