MLB Pipeline has named 2015 Mohawk Zach Logue (Kentucky) the Blue Jays top pitching prospect. In 2015, Zach made 10 total starts for the Mohawks and went 8-0 with a 2.21 ERA and 55 strikeouts in 57 innings pitched. He was also co-named the PGCBL Pitcher of the Year in 2015.

From MLB Pipeline:

Zach Logue, LHP: The 2017 ninth-rounder played his way into Top 30 consideration with a 3.75 ERA, 1.12 WHIP and 136 strikeouts (most among Toronto farmhands) over 120 innings at Double-A and Triple-A. He was even better for Buffalo, where he sported a 3.42 ERA in 17 appearances (16 starts).

See all the top prospects here: https://www.mlb.com/news/prospects-of-the-year-for-every-team-2021