Religion has a way of structuring a belief system of a certain demographic in a particular society. I came from a Roman Catholic background; and Catholic teaching says about the Trinity, three entities constituting one divine being. We were taught that. Like for everybody else, it would depend on their cultural context and environment that would form their perception of God.
As I grew older, I learned and experienced many things, I begin to believe it boils down to the matter of one's faith. So, I believe (I don't think) that there's only one God. Just different translations.
Besides, no one would know which God is the creator of all. As humans, it's highly possible that we'll never grasp that concept since it's something beyond us :)