Is Manny Pacquiao the Greatest Of All Time (GOAT)?

Manny Pacquiao is an eight-division world champion. He is the first boxer in history to win ten world titles, the first to win in eight weight divisions and the first to win the lineal championship in four different weight classes. So how does he stack up against boxers like Sugar Ray Robinson, Muhammad Ali, and Joe Louis? Discuss in Vialogues!