 Complete the following phrase:  As of the end of the 201920 season, Porto have had 70 managers of 16 nationalities, eight of which assumed caretaking roles. A total of 30 managers completed at least one season with the club, and 28 won at least one title. Hungarys József Szabó is Portos most successful manager with 12 titles, including 10 regional championships. Excluding regional honours, the most successful manager is Artur Jorge, who won eight titles, including one 