Looking at #16, Gavin Cecchini's brother Garin is one the Red Sox top prospects and was rated the #2 prospect in the NYPL by BA and #7 in the organization. There's some discussion of Gavin in this thread here from SOSH. There is a question of whether Gavin can stick at SS, but might be the best hitting high school SS since Machado.
Gavin is supposed to be better.