There may be others but here are some of the better known saint 'greats.'
St. Albert the Great
St. Anthony the Great
St. Basil the Great
St. Gertrude the Great
St. Gregory the Great
St. Leo the Great
St. Nicholas the Great
There is also St. Athanasius who was given the title of 'the Great' by the Orthodox Church but does not usually have that title in the Catholic Church.
Go here regarding the three pontiff "greats".
Wikipedia "List of People Known as The Great".
