Ishmael

It is a false narrative that Ishmael is a patriarch of the Arabs. Hagar, Ishmaels mother & Abraham's concubine, was an ancient Egyptian, not an Arab. Ancient Egyptians were ethnically different from Arabs, ancient Egyptians spoke Egyptian not Arabic.
The Ancient Hebrews & Egyptians had no contact with Arabs who originate from the Arabian Peninsula. The Arab conquest wasn't till 634AD-638AD.

Ishmael is in origin an Hebrew name but now it's more used in the Islamic society, especially in the variant Ismail.