Non-MLB
Although they have not thrown an MLB pitch in 2024, Enny Romero threw 3,325 pitches that were tracked by the PITCHf/x system between 2013 and 2023, including pitches thrown in the MLB Regular Season and Fall/Winter Ball. In 2023, they relied primarily on their Fourseam Fastball (92mph), also mixing in a Cutter (85mph) and Slider (81mph). He also rarely threw a Change (82mph) and Curve (69mph).
In 2023, compared to other LHP:
Their fourseam fastball generates more whiffs/swing compared to other pitchers' fourseamers, has essentially average velo, results in somewhat more flyballs compared to other pitchers' fourseamers and has slight armside run. Their cutter has heavy sink. Their slider has some two-plane movement. Their change results in many more groundballs compared to other pitchers' changeups and has a lot of backspin. Their curve (take this with a grain of salt because they've only thrown 2 of them in 2023) comes in below hitting speed, generates an extremely high number of swings & misses compared to other pitchers' curves, is an extreme flyball pitch compared to other pitchers' curves, has little depth and has primarily 12-6 movement.