21. Jhoan De La Cruz, SS, D.R.
39. Carlos Alvarez, LHP, D.R.
Both have either signed or are just about signed by the Padres. The others on your list seem to be still available. They could have agreements we are not aware off though.
The next Blue jays after Polanco who had an agreement with the Blue Jays is Juan Sanchez who is right inside or right outside the top 50 depending on the rankings.