Who produced the most heirs to monarchs?

Historically, King Henry VIII of England is often noted for having the most heirs to the throne, as he had three legitimate children who survived to adulthood: Mary I, Elizabeth I, and Edward VI. However, if considering all heirs in terms of potential claim to the throne, various European monarchs have numerous descendants due to multiple marriages and large families. For example, King Louis XIV of France had numerous children, many of whom had their own offspring, creating a vast network of descendants.