Non-MLB
Although they have not thrown an MLB pitch in 2025, Anderson Severino threw 628 pitches that were tracked by the PITCHf/x system between 2022 and 2024, including pitches thrown in the MLB Regular Season and Fall/Winter Ball. In 2024, they relied primarily on their Fourseam Fastball (94mph) and Slider (84mph), also mixing in a Change (85mph).
In 2024, compared to other LHP:
Their fourseam fastball (take this with a grain of salt because they've only thrown 13 of them in 2024) is basically never swung at and missed compared to other pitchers' fourseamers, is an extreme flyball pitch compared to other pitchers' fourseamers and has well above average velo. Their slider (take this with a grain of salt because they've only thrown 7 of them in 2024) generates an extremely high number of swings & misses compared to other pitchers' sliders, results in more flyballs compared to other pitchers' sliders and has some two-plane movement. Their change (take this with a grain of salt because they've only thrown 4 of them in 2024) is basically never swung at and missed compared to other pitchers' changeups, has surprising cut action, is an extreme flyball pitch compared to other pitchers' changeups, is slightly firmer than usual and has some natural sink to it.