It is my impression that Oregon had a lot of players drafted although I don't think there were a lot of surprises. I haven't checked but I assume Tessar didn't sign and will be playing there and so will Sherfy but they did seem to lose a lot of players from their signing class and from their team.
I think the teams expect to lose the early round guys so keeping one of them is a big bonus but teams get hurt more by the mid to later round guys who sign instead of sticking with their NLIs because those were the ones the schools really expected to be able to keep.
Unless he was offered well over slot I think Jesus Valdez made a good choice in taking his scholarship. His value could go up or down, but in the meantime he'll be getting a good education and playing against top collegiate competition and $150K or so isn't life changing money these days. I only met him once, but my impression of Valdez's dad was that he'd be someone who would put a high value on education.