In Hilkhoth Avodhah Zarah RaMBaM lists the central figures in the transmission of ethical monotheism, and I was wondering if there were any other figures in our mesora not mentioned. Since the list Rabbeinu compiled is mainly to show the chain of transmission from Adam to Moshe (PBUH), was there anyone else that was also as a important figure in the pre-Avrahamic covenant era, such as an Iyov or Yithro (yes, I know they came after, but just as an example)? Here's the list:
"The Eternal Rock was not recognized or known by anyone in the world, with the exception of a few individuals. For example: Hhanokh, Mthushelahh, Noahh, Shem and Eiver. The world continued in this way until the pillar of the world Avraham our father was born" M"T Hilkhoth Avodah Zarah 1:8 (halakha 2 in the Vilna).