All we can really know is that all the revealed gods are fictional, and thus the total silence. Knowledge of God's existence would be intentionally kept from us in order to maintain our free will. And if God doesn't exist, that knowledge is exceptionally good at hiding itself.
If the universe is a case of spontaneous creation, you'd expect some, unguided naturally occurring evidence indicating that. Unfortunately, we can’t use a lack of evidence, as evidence. Clever. Still.....it does get curiouser and curiouser, the longer we go without finding anything to indicate spontaneous creation.