Burrow just completed the greatest year ever by a college QB. 5671 yards 60Tds, National Champion, Heisman.
Starter in 2017 was JT Barrett. Barrett threw for nearly 10,000 yards and rushed for 3000 in his career. He has several Big Ten Conference records including most career passing touchdowns (104) and total touchdowns (147). He also passed Drew Brees for most career offensive yards, with 12,697. He was a national champion. Barrett was cited in the weeks before a season ending injury as a potential Heisman Trophy contender but ended up finishing fifth in the voting.
Haskins threw for 4800 and 50 Tds his senior year and could have easily won the Heisman but at that point people still thought Oklahoma was a legitimate football team.