Team milestones, Badges from projects, congratulations to members regarding personal achievements (such as User Of The Day project awards, or reaching specific targets). Also topics about GRC (Gridcoin) rewards.
Up the top it says 'Updated 24 Jul 2020', but I don't know the data duration. I show a lot of Moo!, which I only started crunching for the sprint and a few days before, so it must be recent-ish.
Last time I saw those stats, CO was way up there on the global rank and I was nowhere. I guess it has to do with whatever one has crunched recently. Collatz skews everything and I actually wish someone would downgrade Collatz points somehow ..