Well, you might end up with a fractal intelligence, that is layered in certain ways. It's an interesting rabbit hole, but I don't know how valid it is in actual reality (above my pay grade).
I do have a problem with the "soccer balls" being able to function as many different types of neurotransmitters, etc. when they are comprised of different functional units than a human brain (at least the various atoms are arranged in a totally different way in them). So it's not possible for them to function in the exact same manner.
You may be correct, but that is not relevant to whether or not two identical functions composed of different parts can produce the same consciousness.
Soccer balls was a really bad example; I just like taking ideas to the extreme.
Imagine we slowly replace your current cells with your own stem cells for every part of your body. They will not be composed of the exact same parts as your original cells, but we can be quite certain that you will still have a consciousness, provided everything goes well. So now we have the same function composed of different parts which will still have a consciousness. Now I know this is much different than soccer balls, but one has to wonder how different each body part can be in order to give rise to a consciousness.
Similarly, we can just look at how many consciousnesses there are in the world with different parts with each one having a similar function. It seems that function is all that matters even though the parts are all different.
It just doesn't make sense to think that the functional behavior of a soccer ball equates to the functional behavior of a dopamine molecule, but perhaps it does.