Who are the best globe-trotting boxing champions of all time?

Sugar Ray Robinson fought in the USA and various countries in South and Central America and Europe. Muhammad Ali fought in the USA, Canada, various countries in Europe and Asia and even in Zaire, Africa. I was surprised to learn that Carlos Monzon just fought once in the USA and held most of his major fights and title defenses in various countries in Europe and South America. Even the Philippines' great Flash Elorde fought in the USA and various countries in Asia and South and Central America. Who are the others you know?