The ontology in experience is extraordinarily rich, there are so many different kinds of things that are comprised in it and the list is itself subject to a kind of evolution - new kinds arising and old kinds dropping away. All of these are however made out of the same basic stuff, necessarily so, since that is the condition of experience and hence they are unlimitedly interactive or intermediating. This has no sensory analogue, the senses being rather almost uniform and almost exclusive subclasses of kinds of arisals. But if you want to think of them as a whole they are like a palette or spectrum out of which experience is composed. What is interesting is that there is no perspective; nothing is further away or closer in, nothing in front of or behind anything else. All are at the exact same 'distance' from the witness, which is of course no distance at all - the concept does not apply even as analogy.