Non-MLB
Although they have not thrown an MLB pitch in 2024, Dario Álvarez threw 906 pitches that were tracked by the PITCHf/x system between 2014 and 2021, including pitches thrown in the MLB Regular Season and The World Baseball Classic. In 2021, they relied primarily on their Fourseam Fastball (90mph) and Slider (80mph), also mixing in a Cutter (87mph).
In 2021, compared to other LHP:
Their fourseam fastball has heavy sinking action, is basically never swung at and missed compared to other pitchers' fourseamers, results in somewhat more groundballs compared to other pitchers' fourseamers and has slightly below average velo. Their slider (take this with a grain of salt because they've only thrown 7 of them in 2021) is basically never swung at and missed compared to other pitchers' sliders, sweeps across the zone, results in more flyballs compared to other pitchers' sliders and has some two-plane movement. Their cutter (take this with a grain of salt because they've only thrown 5 of them in 2021) is basically never swung at and missed compared to other pitchers' cutters, is an extreme flyball pitch compared to other pitchers' cutters and has some natural sink.