Justin Dunn has thrown 2,346 pitches that have been tracked by the PITCHf/x system between 2019 and 2022, all of them occuring in the MLB Regular Season. In 2022, they have relied primarily on their Fourseam Fastball (92mph), Slider (84mph) and Curve (80mph). He also rarely throws a Change (88mph) and Cutter (89mph).
In 2022, compared to other RHP:
His fourseam fastball results in more flyballs compared to other pitchers' fourseamers and has essentially average velo. His slider has exceptional depth, results in many more groundballs compared to other pitchers' sliders and has short glove-side cut. His curve has very little depth, has sweeping glove-side movement, is slightly harder than usual and results in somewhat more flyballs compared to other pitchers' curves. His change is much firmer than usual. His cutter (take this with a grain of salt because he's only thrown 3 of them in 2022) is basically never swung at and missed compared to other pitchers' cutters, is an extreme flyball pitch compared to other pitchers' cutters and has little cutting action.