For a very specific reason the biblical texts denote a particular time in history known as "the fullness of time," the designer of the universe assumed human flesh while at the same time remaining designer of the universe. The biblical texts also specifically denote human attributes in the designer of the universe from the very beginning, including such things as intelligence, speech, hearing, smell, anger, love, even physical parts such as arms, nose, and eyes.
What is more, the biblical texts hardly proclaim the human nature of the designer of the universe to be an insulting or degrading idea, but in fact exult in this very thing, calling it the "glory of God" at the very hour He sheds blood and undergoes a human death.
Frankly, when it comes to science, things couldn't get much more human. So, from the standpoint of people like myself who accept the biblical texts as being in agreement with science and reason, it stands to reason that there is a human element in the designer of the universe. It also stands to reason that intelligent design would permeate the designer's handiwork. It is no wonder there is so much organized matter that behaves according to predictable laws. It is all intelligently designed.
Someone wants to make natural selection and random mutations the be-all and end-all of real science? Fine. I'll even let them teach it in public school. But the rest of the world is not obligated sit idly by and watch the state establish only, and principally, atheistic science by law in the public schools. That is prohibited by our Constitution.
But you also said that both could be created by the designer.
These are the two possibilities I might attribute to a designer that is omnipotent: 1.) organized matter that behaves according to predictable laws, and 2.) unorganized matter that does not behave according to predictable laws (possible, but highly unlikely). Notably absent from this list is the notion of organized matter that is non-intelligently designed - an illogical, mutually exclusive dual concept that someone else might want to entertain, but not one I've suggested.
As for the first possibility on my list, the intelligent designer who organizes matter for various purposes does not even have to be omnipotent.