Complex sentence: There are several varieties of football, with the most notable versions being Association football, Gridiron Football, Australian rules football, Gaelic football and Rugby Football and the number of players selected for each team within these sports can vary substantially.
Split into simpler sentences: There are several varieties of football, with the most notable being Association football, Gridiron football, Australian rules football, Gaelic football and Rugby Football. The number of players selected for each team within these varieties and their associated codes can vary substantially.