Ability to think outside the box

This may be anti-correlated with memory and the ability to follow instructions

I'd say somewhere between your "categorisation" and "thinking outside the box" axes would be taking ideas from one domain and figuring out their applications in others. That would be one example of creativity being aided by powerful memory.

Social intelligence

Is this a useful primitive category?

Not primitive enough. I'd subdivide it at least into something like "people-reading", "mind-theorising", "interest-tracking" and "performance". There are plenty of cases of people being good at one of those but terrible at another.

I also think expressive and language skills could usefully be added to the list. Musical and kinesthetic aptitudes could be added for completeless, although they're probably not within the scope of the "intelligence" you seem to be talking about.