The 24-year-old Gragson from Las Vegas, Nevada, led a race-high 43 of 90 laps, including the final 21, to record his third Xfinity victory of 2022 at the Tricky Triangle.
The 28-year-old Hill from Winston, Georgia, led a race-high 73 of 163-scheduled laps en route to his second career victory in the Xfinity circuit at his home track.
The 19-year-old Gibbs from Charlotte, North Carolina, led five of 48 over-scheduled laps as he executed a bold final lap pass on Larson for his eighth Xfinity career victory.
The reigning ARCA Menards Series East champion from Johnston, Iowa, will commence his Xfinity Series debut with Joe Gibbs Racing at Road America in July.