RE: Do angel delegators actually exist on Hive?

Quick answer for you...

The person receiving the delegation will receive all of the curation rewards. You will however not be able to use the received delegation to vote on a witness or proposal.

Some curation projects vow to payout to their delegators daily, but that is not something that happens automatically. They either do it manually or have some sort of automation process that they set up on their own using a bot of sorts.