The top tier travel teams have relationships with a lot of college coaches and teams. Former players, former coaches. Buddy of a buddy. Ex-team mate.
The travel org itself might have a big enough name/cache to at least get a listen from any coach. A common refrain on this site is that college baseball is actually a pretty small club.
They contact who they know. In general, your son should contact the RC.
RJM did mention going to the local colleges to get seen/know by the coaches if you can afford it. We missed out on a lot of that opportunity due to COVID. Local coaches can come by and see him play or send folks to watch him play.