Who was the Charons rivals?

Charon, the mythological ferryman of Hades, had rivals in various other figures associated with the afterlife and the journey of souls. Notably, Hermes was seen as a guide for souls to the Underworld, often regarded as a competitor to Charon for leading the deceased. Additionally, the Erinyes (Furies) and other deities of the underworld could be considered rivals in the broader context of managing the fate and passage of souls. However, Charon's primary role as a ferryman remained distinct from their responsibilities.