Of course I have other systems such as reflexes, physical muscle coordinators, but these feel largely separate systems from the core brain, e.g. don't matter to my intelligence.
I am naturally weak at several things that I think are not so much related to text e.g. navigating in real world etc.
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(#) Human thought is based on real world sensor data first of all. Human words have invisible depth behind them based on accumulated life experience of the person. So two people using the same words may have very different thoughts underneath them. Somebody having only text book knowledge and somebody having done a thing in practice for a long time may use the same words, but underneath there is a lot more going on for the latter person. We can see this expressed in the common bell curve meme -- https://www.hopefulmons.com/p/the-iq-bell-curve-meme -- While it seems to be about IQ, it really is about experience. Experience in turn is mostly physical, based on our physical sensors and physical actions. Even when we just "think", it is based on the underlying physical experiences. That is why many of our internal metaphors even for purely abstract ideas are still based on physical concepts, such as space.
They are not a physical model like humans. Ours is based on deep interactions with the space and the objects (reason why touching things is important for babies), plus mentioned preexisting wiring for this purpose.