Non-MLB
Although they have not thrown an MLB pitch in 2024, Anthony Castro threw 1,110 pitches that were tracked by the PITCHf/x system between 2020 and 2023, including pitches thrown in the MLB Regular Season, Spring Training and Fall/Winter Ball. In 2023, they relied primarily on their Slider (85mph), Fourseam Fastball (94mph) and Sinker (94mph). He also rarely threw a Change (90mph).
In 2023, compared to other RHP:
Their slider is an extreme flyball pitch compared to other pitchers' sliders, has short glove-side cut and has some two-plane movement. Their fourseam fastball is a real worm killer that generates an extreme number of groundballs compared to other pitchers' fourseamers, generates fewer whiffs/swing compared to other pitchers' fourseamers, has less armside movement than typical, has some natural sinking action and has essentially average velo. Their sinker generates an extremely high number of swings & misses compared to other pitchers' sinkers, results in somewhat more groundballs compared to other pitchers' sinkers, has slightly above average velo and has some natural sinking action. Their change (take this with a grain of salt because they've only thrown 2 of them in 2023) is thrown extremely hard, is basically never swung at and missed compared to other pitchers' changeups, results in more flyballs compared to other pitchers' changeups and has some natural sink to it.