Actually BlueSky194, I can answer that question, simply by stating that the question is senseless in principle. And the reason for that is God is not part of, not a captive of, the 4D spacetime process that we humans normally experience. We have that insight on the testimony of at least three or so millennia-worth of cross-cultural (even universal, I'd warrant) human intellectual and spiritual effort for which we have actual historical documentation.
Cause-and-effect issues depend on spatial and temporal extension. But God is not "captive" to space and time at all. Therefore, to ask about the "causation" (the creation, as you put it) of God is a meaningless question. Furthermore, simply to ask such a question indicates an enormous "category error" has been committed.
A serious question by BlueSky.. Chimps accept humans as real they just don't really care about them.. No chimp ever sought after "a" God.. But men have sought after "a" God from day one, whenever that was.. No culture in history, currently known, didn't invent a God.. They all did.. sometimes multiple ones..
Men invent Gods.. or have an appetite for "God(s)"... Mankind is unique among Primates in that... that is if man is a primate at all.. Like some that "hate" the God concept try to "sell" you/us...
Can "a" God be created?... Absolutely... Is God (the real one) created by man?.. It all comes down to the observer.. What do you observe?.. Amazing that God and mankind are observeing each other.. I observe God and see things, God observes me and sees things.. Who is more accurate?..
Really.. mankind.. should study the observations of "observers".. What is observing "well"?.. What is observeing "less well".. How accurate are my or you're observations, who is closer to the Truth?.. What are "we" observing "with"?.. What are the tools of "observation"?...
You know we could have an important discussion on this subject.. The observation of reality.. and are their stages to observing reality?.. You know, different realities..
BB, if you read John chapter fourteen, you will see a 'physics lesson', taught to Philip by Jesus. To say God is not in time because He created time is to dismiss the physics lesson taught there.