Arguably there are just two categories: stuff and not-stuff (aka vacuum). And then you go from intergalactic space (almost entirely not-stuff) via interstellar space (marginally more stuff) through planets and stars up to neutron stars (lots of stuff) to black holes (well, we don't actually know what is inside a black hole exactly, our models break down).

Is this classification useful for everyday life? Not at all, but looking at things from different perspectives for a change can be quite amusing.