In this sub-conversation, its what humans come up with (or invent).
.. all constrained by your opening condition of: 'if the universe and our world just happens to be a divine creation' .. which, if you consider yourself a human, is a human constraint which denies our in-common informational history embedded within our type of lifeform.
What we don't know yet, are the uncertainties which you, yourself, acknowledge as being part of science. This is the field from which human discoveries (or new physics) emerge.
What we can't possibly know is an enormously larger field containing other objects which branched off from our own prior to them acquiring their own unique histories. They would now be temporally disconnected from us .. thus they are now unknowable.
The concept of a divine creator as you point out above, ensures that what we currently know, will stay the same because we cannot make predictions from that. It is a human introduced constraint .. and not one that the universe (and its possible new physics) has dished up to us no matter how much anyone tries to shoehorn their own beliefs into what we already know the universe always works out for us, as being.
Whatever ..
Mine works, is testable, is based on tested data and it makes firm predictions of where to look next, (the laws of physics and new physics).
Its not a buch of non specific word salad based on circular definitions which has been unable to make any progress for at least a couple of hundred years.