The big 3 in Portugal is Benfica (31 titles), Porto (22 titles), and Sporting Club Portugal [aka Sporting Lisbon] (18 titles). They have won all but 2 league titles. Belenenses won the league in 1946 , and Boavista won it in 2001.
Portugal’s domestic league is good enough to get them up to 3 spots each year in the Champions League. Portugal’s current national league ranking by UEFA is #6 in Europe.
