Chicago Cubs
Although they have not thrown an MLB pitch in 2024, Justin Steele threw 5,674 pitches that were tracked by the PITCHf/x system between 2021 and 2023, all of them occuring in the MLB Regular Season. In 2023, they relied primarily on their Cutter (92mph) and Slider (83mph). He also rarely threw a Sinker (92mph), Curve (81mph) and Change (88mph).
In 2023, compared to other LHP:
Their cutter is thrown at a speed that's borderline unfair and has strong cutting action. Their slider sweeps across the zone and has some two-plane movement. Their sinker is a real worm killer that generates an extreme number of groundballs compared to other pitchers' sinkers, has surprisingly little armside run and has slightly above average velo. Their curve is much harder than usual and has slight glove-side movement. Their change is thrown extremely hard, is basically never swung at and missed compared to other pitchers' changeups, is an extreme flyball pitch compared to other pitchers' changeups, has slight cut action and has some natural sink to it.