Jays pitchers the past two decades since 2000:
Legendary:
1) Roy Halladay
In a class of his own. Nobody touches him. By far was one of the best if not best pitchers in baseball from 2002 until 2011.
Second Tier:
2) Kevin Gausman, David Price, A.J. Burnett
Gausman was elite from 2022-2023 during the regular season. Would have been nice if he dominated in the WC rounds. David Price felt the closest to having an arm like Roy Halladay down the stretch during the 2015 season, however was inconsistent during the Postseason. Burnett when healthy was dominant and in the second half of the 2008 season, Doc and him were a fantastic No. 1-2 punch! Would have been awesome seeing that Jays pitching staff in the Postseason.
Third Tier
3) Marcus Stroman, Jose Berrios, JA Happ, Ricky Romero, Brandon Morrow, Mark Buehrle, Shaun Marcum
Each of these guys were reliable arms who had multiple years of success. A solid group of No. 2-3 starters. Marcum from 2007-2008 and in 2010 because of injuries. Brandon Morrow at times showed flashes of his ace upside, but durability and health set him back. Otherwise, he might have been included in the second tier.
Fourth Tier:
4) Robbie Ray, Aaron Sanchez, Yusei Kikuchi
Each had one dominating season for the Jays, but Ray left as a FA and Sanchez just s*** the bed. If Ray was here for multiple years would have included him in the third group, but like Org said, you felt that the bottom might fall out at some point. Kikuchi also only really good here for a short period.
Fifth Tier:
5) Chris Bassitt, Marco Estrada, RA Dickey, Hyun-jin Ryu:
Crusty old vets who were decent but nothing spectacular. Pretty much provided between 2-3 WAR each season.