Brazil Football League
The country of the oval ball, not the USA, but Brazil, has 442 federated teams and at least 17,000 athletes in legal conditions to play American Football games in the country. Therefore, the national market has enough fans to make championships with a number of teams that manage a dispute that fills the calendar well.
Another fact about American Football demonstrates that room for growth exists. A survey by the Brazilian Confederation of American Football (CBFA) carried out in 2020 indicates that Brazil is the third largest consumer of the sport in the world, behind only the United States and Mexico. There are 20 million people who consume the sport in Brazil.