I remember Olamide Zacchaeus of Virginia being a guy that I marked last year to watch for 2019 because he was so explosive and agile, and such a good receiver. He reminds me a bunch of Jamison Crowder.
Best receiver nobody knows about is Jauan Wesley. Kid just ran in the 4.4's at NIU pro day and jumped 10'5".
I watched him at Iowa St. before he transferred to NIU. Go check out the film of him against Florida St. this year. Levonta Taylor is still looking for him after the move Wesley put on him for a score in that game. One of the best route runners in this class.