Will learning to throw a fastball lead to faster slinging?

I've been watching videos from pitching coaches and analyzing the mechanics of MLB pitchers and as far as I can tell, the fundamentals of throwing a baseball unaided should directly translate to slinging.

Would it be beneficial to train like a baseball pitcher to get better at slinging? If I learn to throw a fastball, will it improve my performance? I can already reach ~210 meters consistently, but I think I can go much farther with better technique.

I've never played baseball but I have been using a sling for years so slinging a rock feels more natural to me while pitching feels forced and awkward. I don't want to mess up my timing or build any muscle memory that will negatively affect my slinging so I'm wondering if I should avoid altering my mechanics to more closely match a baseball pitch.