discoveryit is a manual curation project and selected curators can nominate your post for their votes. Then out of it, some gets nominated for even higher curator votes.
think of it as PAKX command, then hivepakistan is higher curator (as pakx don't keep HP) while pakx is semi-automated by decentralized curators and hivepakistan is further consideration (rarely happens though but concept is a bit similar).
A Key different is only selected individuals can use this command for discovery and then very few can recommend for whale votes (or may have direct access to whale vote)
Like I can nominate x number of posts per week to whales as well using discord commands but it's a very strict process.
RE: Who do you delegate to?