Non-MLB
Although they have not thrown an MLB pitch in 2024, Brandon Brennan threw 877 pitches that were tracked by the PITCHf/x system between 2019 and 2021, including pitches thrown in the MLB Regular Season and Spring Training. In 2021, they relied primarily on their Sinker (93mph) and Change (82mph). He also rarely threw a Slider (84mph).
In 2021, compared to other RHP:
Their sinker generates an extremely high number of swings & misses compared to other pitchers' sinkers, has slight armside run and has some natural sinking action. Their change (take this with a grain of salt because they've only thrown 15 of them in 2021) generates an extremely high number of swings & misses compared to other pitchers' changeups, results in more flyballs compared to other pitchers' changeups, has slight armside fade and has slightly below average velo. Their slider (take this with a grain of salt because they've only thrown 1 of them in 2021) is basically never swung at and missed compared to other pitchers' sliders, is an extreme flyball pitch compared to other pitchers' sliders and has primarily 12-6 movement.