Sports leagues similar to or like Super League

Played across England but is most popular in Northern England, especially Yorkshire and Lancashire where the game originated. These areas are the heartland of rugby league. Wikipedia

The Castleford Tigers are a rugby league club in Castleford, West Yorkshire, England, that compete in the Super League, the top-level professional rugby league club competition in the Northern Hemisphere. The club have competed in the top division for the majority of their existence having only been relegated twice in their history, Castleford has won the Challenge Cup four times. Wikipedia

Played across England, Ireland, Scotland and Wales, but it's heartland in the North of England is where the sport is most popular, and is where the majority of professional clubs are based. First established in the George Hotel, Huddersfield, where 22 clubs from the Rugby Football Union split to form the Northern Rugby Football Union. Wikipedia

Professional rugby league competition. Second-tier competition organised by the Rugby Football League, the governing body for the sport in England, and consists of 14 teams, with promotion to the Super League and relegation to the third-tier competition, League 1. Wikipedia

Professional rugby league club in St Helens, Merseyside who compete in the Super League, the top tier for rugby league in Great Britain. Formed in 1873, St Helens are one of the 22 original members of the Northern Rugby Football Union and have been league champions on 15 occasions. Wikipedia

The London Broncos are a rugby league club. 40th in the club's history, and the fourth at the Trailfinders Sports Ground. Wikipedia