Are there two types? There is the smoke-filled back room of establishment GOP types picking the RINO for us. Then, there is the brokering that would go on between the freed-up delegates, as it dawns on them that vote after vote, no candidate is getting to a majority. Isn't that a "brokered" convention as well, and if stalemated, a newcomer could result?
I think the nominee still needs to get a majority of the delegate votes.