Was looking through the Spring Training workout photos and noticed some players are wearing non-mesh Spring Training caps (so far Angels, Phillies, and Mets). The caps have a black UV instead of gray, and the fabric looks similar to the kind used for the 2021 and 2022 Clubhouse caps.
You can see the mesh cap worn by the guy on the right, with Shohei and Sandoval wearing the non-mesh style.
And a here's Trout wearing one.