Non-MLB
Although they have not thrown an MLB pitch in 2024, Matt Hall threw 1,037 pitches that were tracked by the PITCHf/x system between 2018 and 2022, including pitches thrown in the MLB Regular Season and Spring Training. In 2022, they relied primarily on their Fourseam Fastball (89mph), also mixing in a Curve (75mph), Slider (83mph) and Change (82mph).
In 2022, compared to other LHP:
Their fourseam fastball has much less armside movement than typical, generates fewer whiffs/swing compared to other pitchers' fourseamers, has some natural sinking action, results in somewhat more flyballs compared to other pitchers' fourseamers and has slightly below average velo. Their curve (take this with a grain of salt because they've only thrown 19 of them in 2022) has an exceptional bite, is an extreme flyball pitch compared to other pitchers' curves, generates fewer whiffs/swing compared to other pitchers' curves, has slight glove-side movement and has slightly below average velo. Their slider (take this with a grain of salt because they've only thrown 13 of them in 2022) generates an extremely high number of swings & misses compared to other pitchers' sliders, results in more flyballs compared to other pitchers' sliders and has short glove-side cut. Their change (take this with a grain of salt because they've only thrown 7 of them in 2022) is basically never swung at and missed compared to other pitchers' changeups, is an extreme flyball pitch compared to other pitchers' changeups and has slight cut action.