This is just my opinion and speculation.
I see the Q as existing across parallel universes (i.e. there's one version of 'our' Q that can see all parallel realities).
I've come to understand that there is one story where the Q continuum is aware of an even mightier species, the 'them'
. A species that created all these realities and timelines simply to be amused by it, and that may erase those realities the moment they're no longer amused by them.
In other words,
us (or pretty much an analogy of us)
.
In that sense, I think the Q have 'trans-dimensional' awareness (access to the complete set of 'Star Trek' realities), but not 'outside-dimensional' awareness' (access to our universe), the way we do. For them, the original TOS timeline and Kelvin timeline both exist, parallel. They may even know that the Kelvin timeline is a 'child branch' from the TOS timeline because of Nero traveling back in time. But they don't know the TOS timeline is chronologically the original timeline in our universe and came approximately 30 years before the Kelvin timeline as they don't have access to that.
In other words, they are (one of) the highest species inside the system, we are (one of) the lowest species on the meta-level beyond that.
At least, that's my pet theory. Not that it's terribly useful for anything, but e.g. speculating about exact warp speeds isn't, either
