Who is the Greek god of the sun, distinct from Apollo?

Who is the Greek god of the sun, distinct from Apollo? Helios is the Greek god who personifies the Sun.

Helios was traditionally the son of the Titans Hyperion and Theia, and the brother of Selene, goddess of the Moon, and Eos, goddess of the Dawn. Myth portrays him driving a radiant, horse-drawn chariot across the sky each day.

A common mix-up is treating Helios and Apollo as identical. Apollo became associated with the Sun over time, especially from the fifth century BCE onward, and later Greek and Roman writers often merged their solar identities. In earlier Classical Greek religion, however, Helios and Apollo were distinct gods.

Helios also appears in the story of Phaethon, his mortal son, and in the Odyssey, where Odysseus’s crew incur his anger by slaughtering his sacred cattle on Thrinacia. His Roman counterpart was Sol.