The best youth leagues are where the kids enjoy the game. It’s not about the brand name. It’s about the people behind the local organization.
Kids enjoy the game by playing not sitting. Quality coaching can be a toss up at the youth level. But there are work arounds. I don’t know one kid who became a high school or college prospect who was held back by a pre teen coach. You will find the kids who “want it” want to practice a lot with dad away from team practices.
Don't focus on development and getting to high school or college ball as a preteen. Enjoy the process. Learn how to play the game correctly. When kids move up to the full size field then it’s time to start proving they’re players. But even then a kid can’t control when he grows. Sometimes it takes patience.