Your references are to Judeo-Christianity. That would likely be the culturally appropriate religion managed by the culturally appropriate gods. That didn’t address the question of why earlier gods or different gods would be or should be subordinate to your “he” gods.
Yeah, imagine how moody and arrogant you will say I am when I go back to studies that date back to Greek and Roman mythology.
Studies on these early beliefs of Gods appear to be based on the belief that people of power in this life gain equal or more power in the afterlife. Some of these Gods bear both a remarkable resemblance, personality, or history of the little that is known about early rulers. It appears that early man always had a belief in the afterlife, perhaps especially the Egyptians. Today, modern humans with a Catholic background might compare this to belief of Patron Saints. (Mankind becomes saints, not Gods.) On the other hand modern humans with an LDS background might associate this early belief with their own belief we are destined to become Gods.
It is not a matter of Gods being subordinate to Gods (if in fact there is more than one). I suppose it could be a matter of ancient beliefs becoming subordinate to modern belief, which will in turn become subordinate to future belief. Such is the nature of change and thinking evolving.
Probably just as far back as Greek and Roman thought on deities, is some pre-Columbian beliefs (also seen in the days of Abraham in the 'Old World'). That is the idea that animals have strengths and spirits, and that these qualities could manifest themselves in carvings or totems, thus protecting the bearer or the household that possessed them. These were small spirits, but some societies also believed that there was a Great Spirit presiding over the world as a whole.