Chicago Cubs
Although they have not thrown an MLB pitch in 2023, Nick Neidert threw 1,084 pitches that were tracked by the PITCHf/x system between 2020 and 2022, including pitches thrown in the MLB Regular Season and Spring Training. In 2022, they relied primarily on their Fourseam Fastball (92mph), also mixing in a Slider (85mph), Change (83mph) and Curve (78mph).
In 2022, compared to other RHP:
Their fourseam fastball is basically never swung at and missed compared to other pitchers' fourseamers, has an obvious tail, has some natural sinking action, has essentially average velo and results in somewhat more groundballs compared to other pitchers' fourseamers. Their slider generates fewer whiffs/swing compared to other pitchers' sliders, results in more flyballs compared to other pitchers' sliders, has less than expected depth and has primarily 12-6 movement. Their change (take this with a grain of salt because they've only thrown 19 of them in 2022) results in more flyballs compared to other pitchers' changeups, has slight armside fade and has some natural sink to it. Their curve (take this with a grain of salt because they've only thrown 16 of them in 2022) is basically never swung at and missed compared to other pitchers' curves, has little depth and results in somewhat more flyballs compared to other pitchers' curves.