Well no. You can only have one fundamental substance in a universe.
For a universe to exist, anything and everything in that universe must have the property of affect, else it wouldn’t exist in that universe. So we can call that property substance “A”. If we propose that there “could possibly be” a substance “B” as well, substance B would also have to have the property of affect, which means that our substance B is actually substance A.
And if we propose that there is another parallel universe made of substance B, all substance B in that universe must affect substance B, else it wouldn’t exist in that universe. But if it has affect, then it is substance A, the property of affect. And then because it has that same property, it is in reality, the same universe, not independent or parallel.
A non-existent thing cannot be divided at all. And an existent thing has affect and being a quality rather than a mere quantity, can be divided infinitely and thus can never be at zero.
Everything that exists is necessarily substance A, else it could not be said to exist.
For anything to be a hypothetical existence, it must have affect. And it cannot have a property that isn’t affect, else that proposed property wouldn’t exist. And then if it has affect, it is substance A, affect itself. You cannot propose that something “could exist” unless you propose that it has the property of affect because that is what is meant by something existing. Affect is the one property that cannot be left out of any proposed existent thing. And any other proposed property cannot be anything but affect, merely more or less of it in differing arrangements.