Perhaps I should have said a number of state supported clubs, or which Real is the biggest, and therefore the state sponsored club most likely to rival Prem clubs?Real Madrid aren't Spain's "State Football Club" in any sense of the word, however much people in England cling desperately to the idea.
We could start with the fact that both our king, Felipe VI, and president, Pedro Sánchez, are both lifelong Atleti fans (as is the mayor of Madrid, José Luis Martínez Almeida).