I put only 5 families because the others are similar: very strong until the 1980s and after defunct or very small.

1. Chicago Outfit - 1950s to 1980s (Commission seat + controlled the biggest Las Vegas casinos)
2. Magadinno family - Old man's era (Commission seat + controllerd much of the heroin traffick from Canada)
3. KC family - Civella era (strong presence in Las Vegas)
4.Detroit family - Zerelli era (Commission seat + very strong union ties + very stable family survived the 1980s without internal wars)
5.Philly family - 1977 to 1989 (Commission seat+controlled Atlantic City and South Jersey rackets)