Non-MLB
Although they have not thrown an MLB pitch in 2024, Angel Rondón threw 340 pitches that were tracked by the PITCHf/x system between 2021 and 2022, including pitches thrown in the MLB Regular Season and Spring Training. In 2022, they relied primarily on their Fourseam Fastball (94mph) and Slider (81mph), also mixing in a Change (84mph) and Sinker (91mph).
In 2022, compared to other RHP:
Their fourseam fastball has some natural sinking action and has essentially average velo. Their slider generates an extremely high number of swings & misses compared to other pitchers' sliders, results in more flyballs compared to other pitchers' sliders, has below average velo and has some two-plane movement. Their change results in more flyballs compared to other pitchers' changeups and has slight cut action. Their sinker (take this with a grain of salt because they've only thrown 14 of them in 2022) generates more whiffs/swing compared to other pitchers' sinkers and results in somewhat more flyballs compared to other pitchers' sinkers.