Which Greek gods were associated with Isis, Horus, and Serapis in Hellenistic Egypt?

In the context of Hellenistic Egypt, the process of religious syncretism led to the identification of major Egyptian deities with Greek counterparts to make them more accessible to the Greek-speaking population.12

The following Greek gods were associated with Isis, Horus, and Serapis:

• Isis: She was equated with the Greek goddesses Demeter and Aphrodite.1
• Horus: He was identified with the Greek gods Apollo and Helios.123
• Serapis: As a Hellenized deity, he was associated with Zeus, Dionysus, and Hades (Pluto).41

These associations were part of a broader effort to blend Greek and Oriental religious traditions, particularly under the Ptolemaic dynasty, which sought to integrate the religious life of their new kingdom while maintaining the cultural influence of the Greek-speaking elite.12