I didn't say what influences life isn't natural. Of course the thing that is out there that we aren't aware of is natural.
It sounds to me like you believe in a non-revealed god-type character that doesn't mess with us humans, nor does it revolve around us.
We are made of cells. The thing I am talking about must be responsible for how cells are put together to form more complex life. Therefore, this thing (I won't call it a "character") influences all life in that it forms the life out of cells.
We have to be careful here. We can't say that this is a human-like spirit that says "I want life to be like this, so I'll make it like this." We have full proof of evolution happening. But there has to be some force (or something else) that is guiding cells and making them operate how they operate. After all, the random chance idea seems impossible (and I explained that above).
But even if this "thing" that you think exists weren't a true god or deity of any kind, it still seems to me that you would be even lower on the scale - a 5, even. Simply because you have a belief of something that is supernatural (give or take).
I do not believe in anything supernatural. Supernatural cannot exist.
Also, I'm curious as to the kind of influence they hold. Did they/it simply start life and leave it at that? Are they with us now?
I can't answer this question as I know nothing about it and I have no idea what it is. All I know is there there has to be something in the picture. And it's likely nothing like what we imagine (because it's not possible to imagine something outside of our scope).
Or is it something different than that. Perhaps you simply mean a "force" undiscovered by us. A scientific force, not a supernatural one. Something that could shake up the world of physics. In this case - yes, absolutely possible. Science could any day discover something radically new that would change our world as we have known it. A "new gravity," if you will.
This is more likely.