I would have thought there'd be separate categories for each race. They are canonically after one another so having an 'All Campaigns' makes sense, but they are also seen as separate from each other since you go through the campaign menu to continue to the next.

That, and ILs could probably be added. The videos on SDA should qualify for them.

Edit: I guess I'll start really caring once I get a run in.

The Precursor campaign could be added as a Misc category. It is official after all. Though it is something that can be ignored until someone does a run of it, to prevent cluttering the leaderboards; same goes with Insurrection, Enslavers, and Retribution.