Besides Helfrich and Wright, here are a couple more names from double agent Chip Brown
Brad Cornelsen, Virginia Tech offensive coordinator
Virginia Tech's power spread offense averaged 28.2 points per game (69th in FBS) in 2017 with redshirt freshman QB Josh Jackson after a record-setting season in 2016 with QB Tyrod Evans in which the Hokies averaged 35 points per game. Before that, Cornelsen oversaw the offense at Memphis under Justin Fuente, including the development of 2-star QB Paxton Lynch into a first-round NFL draft pick.
Graham Harrell, North Texas offensive coordinator
Before hiring Tim Beck, Tom Herman attempted to hire OU's Lincoln Riley, a descendant of Mike Leach's Air Raid. Harrell, another Air Raid descendant, oversaw a UNT offense in 2017 that averaged 35.5 points per game in 2017 (No. 20 in FBS) with 291.9 yards passing (No. 21 in FBS) and 162.9 yards rushing (No. 67). The former Texas Tech quarterback joined Seth Littrell's staff at UNT before the 2016 season, and his offense saw the 11th-best turnaround in the nation, scoring 9.6 points per game more than it did in 2015.