The last time the Blue Jays picked 19 they took Alex Rios out of high school in 1999 (27.3 rWAR).
The best 19th pick of all time was Roger Clemens in 1983 (139.2 rWAR).
Here’s a list of #19 picks in the past couple years:
2020 Mets, Pete Crow-Armstrong
2019 Cardinals, Zack Thompson
2018 Cardinals, Nolan Gorman
2017 Giants, Heliot Ramos
2016 Mets, Justin Dunn
2015 Pirates, Kevin Newman
2014 Reds, Nick Howard
2013 Cardinals, Marco Gonzales
2012 Cardinals, Michael Wacha
2011 Red Sox, Matt Barnes
2010 Astros, Mike Foltynewicz
2009 Cardinals, Shelby Miller
2008 Cubs, Andrew Cashner