One of the difficulties in analyzing L/R splits is that they tend to be highly variable from season to season for some players.
Looking at RH OPS minus LH OPS (Negative means reverse splits for LH hitter)
Rowdy: 2022: 0.157, Career: 0.068
Winker: 2022: -0.143 Career: 0.224
Yelich: 2022: 0.063 Career: 0.093
Wong: 2022: 0.404 Career: 0.101 (Wong added for reference)
Our LH rookies have had reverse (Turang) or very slight splits (Mitchell, Frelick), but we really don't know if that will persist in the majors; it often doesn't as players face better pitchers.
Last year, Contreras killed LHP, while Urias, and Brosseau did slightly better against LHP, while Adames had a reverse split (and that agrees with his career numbers). Taylor had a slight reverse split.
I hate to say it, but our best hope is for our LH hitters to randomly not have a bad year vs. LH pitchers. That's right, the best we can hope for is random chance. Or maybe for some of our RH hitters to finally realize they're supposed to mash LH pitchers.