Non-MLB
Although they have not thrown an MLB pitch in 2024, Tom Wilhelmsen threw 6,725 pitches that were tracked by the PITCHf/x system between 2011 and 2017, including pitches thrown in the MLB Regular Season and Spring Training. In 2017, they relied primarily on their Fourseam Fastball (95mph) and Slider (86mph), also mixing in a Curve (78mph) and Sinker (95mph). He also rarely threw a Change (89mph).
In 2017, compared to other RHP:
Their fourseam fastball has heavy sinking action, has much less armside movement than typical, generates more whiffs/swing compared to other pitchers' fourseamers and has slightly above average velo. Their slider results in somewhat more groundballs compared to other pitchers' sliders and has some two-plane movement. Their curve is basically never swung at and missed compared to other pitchers' curves, has primarily 12-6 movement and results in somewhat more flyballs compared to other pitchers' curves. Their sinker is basically never swung at and missed compared to other pitchers' sinkers, has well above average velo, has less armside run than typical and has some natural sinking action. Their change (take this with a grain of salt because they've only thrown 18 of them in 2017) is thrown extremely hard and results in more flyballs compared to other pitchers' changeups.