Hi Michael, Almost all college summer leagues have a wide variety of players from different levels. However, there are a few that do stand out. Below is a link to the top 10 college summer leagues in the nation. These leagues mainly consist of D1 players and top draft prospects for the upcoming season. We will also include a link to a list of summer leagues around the country. Any league outside of the top 10 usually has D2, D3, NAIA, and JUCO players! Top 10: https://www.summerbaseballregister.com/2019_ten_leagues List: https://www.summerbaseballregister.com/leagues