Warren Ruggiero Wake Forest OC: Offensive innovator who does great work with dual threat QBs in an RPO based scheme. Would be a great fit with Buchner at QB, and comes from a school that profiles well to ND. Might be able to bring a GT WR or 2 with him? (#1 or #2 candidate IMO)
Garrett Riley TCU OC: Highly productive offenses at SMU both seasons he was OC there, young, bit of an up and comer
Jeff Grimes Baylor OC: Experienced play caller and coach, developed Zach Wilson at BYU, turned around a putrid Baylor offense rather quickly, OL background who wants to establish a physical, tough presence up front, TEs get a lot of use (IMO #1 or #2 candidate)
Tom Manning Iowa State OC: Had several highly productive offenses at Iowa State, worked well with dual threat QBs, highly productive TEs, lots of RPOs
Mike Yurcich Penn State OC: Architect of several explosive offenses over almost a decade, great QB recruiter and developer, great use of his personnel, might be a bit of a pipe dream and ready for a HC gig.
Kirk Ciarrocca Minnesota OC: High floor low ceiling hire, Tanner Morgan's best seasons came under his tutelage, simple RPO scheme that's easy on QBs, power run game
Ryan Grubb Washington OC: Innovative scheme, highly productive offenses at Fresno State and now Washington. Makes things easy on QBs and puts them into positions to succeed (edited)