This is just a few of the different types of Baseball Leagues:
Youth Leagues: American Legion Baseball
Babe Ruth League
Cal Ripken
Little League Baseball
Pony Baseball
Middle School Baseball
High School Baseball
Amateur Baseball:
Amateur Baseball Association
Men's Senior Baseball League
Midlands League Baseball
All-American Amateur Baseball Association
College Baseball:
NCAA
National Club Baseball Association
National Junior College Athletic Association
Collegiate Summer Baseball Leagues
Semi Professional Baseball
American United Baseball League
Midlands League Baseball
National Semi Pro Baseball
Intercounty Baseball
Professional Baseball
Major League Baseball
National League
American League
Minor League Baseball
Youth Leagues: American Legion Baseball
Babe Ruth League
Cal Ripken
Little League Baseball
Pony Baseball
Middle School Baseball
High School Baseball
Amateur Baseball:
Amateur Baseball Association
Men's Senior Baseball League
Midlands League Baseball
All-American Amateur Baseball Association
College Baseball:
NCAA
National Club Baseball Association
National Junior College Athletic Association
Collegiate Summer Baseball Leagues
Semi Professional Baseball
American United Baseball League
Midlands League Baseball
National Semi Pro Baseball
Intercounty Baseball
Professional Baseball
Major League Baseball
National League
American League
Minor League Baseball