@evan I did not know CB rank was a thing, but (1) memories of Klout and (2) glancing at a few obvious (eg famous VCs, CEOs) profiles it seems you "win" (are not ranked) if you have identified investments.
Or maybe higher ranks just don't show unless you pay CB (which is why I rarely look at it, probably going to hit $-only data/paywall long before finding whatever I wanted to know).