2023 Jayden Daniels - #1 in QBR, #2 in TD passes
2022 Caleb Wiliams - #5 in QBR, #1 in TD passes
2021 Bryce Young - #2 in QBR, #2 in TD passes,
2019 Joe Burrow - #1 in QBR, #1 in TD passes
2018 Kyler Murray - #1 in QBR, #3 in TD passes
2017 Baker Mayfield - #1 in QBR, #2 in TD passes
2016 Lamar Jackson - #4 in QBR, #16 in TD passes (had 21 rushing TDs)
2014 Marcus Mariota - #1 in QBR, #2 in TD passes
2013 Jameis Winston - #1 in QBR, #2 in TD passes
2012 Johnny Manziel - #1 in QBR, #24 in TD passes (21 rushing TDs)
2011 RGIII -#4 in QBR, #4 in TD passes
2010 Cam Newton - #2 in QBR, #11 in TD passes (20 rushing TDs)
Currently Ty is #16 in QBR and #5 in passing TDs.
Some of the QBs he would be in competition with based on these stats would be...
Maiava - #1 in QBR, #18 in pass TDs
Sayin - #4 in QBR, #7 in pass TDs
Beck - #6 QBR, #34 in pass TDs
Taylen Green - #2 in QBR, #12 in pass TDs
Mendoza - #7 in QBR, #4 in pass TDs
Altmyer - #9 in QBR, #18 in pass TDs
Pavia - #14 in QBR, #12 in pass TDs
Ty won't get very many games to simply pad stats. Even our "easier" SEC games are against teams like Auburn and SC who have decent to good defenses. He will need to have a big game against Tennessee since their pass D is pretty weak.
I may also have missed some other contender at QB but these are the guys who stood out. Obviously, Arkansas is unlikely to have the record for Green to win it. And same with Illinois and Altmyer. Pavia missed his chance by playing so poorly against us IMO.
That leaves the main contenders as probably Maiava, Sayin, Beck, Mendoza and Ty assuming a QB wins it.
If you are a bettor then Maiava is really intriguing. Currently +2500 to win and his HC helped Caleb, Kyler and Baker win Heismans. Plus he has a big game against Notre Dame this week and if USC wins and he has a big game those odds will likely change drastically.