Humayun
Yes, though Persian in origin, it was borne by devout Muslim Mughal emperors and carries meanings of divine fortune aligned with Islamic concepts of barakah (blessing).
While Persian, it corresponds to Arabic Maimun (fortunate) or Mubarak (blessed), though it is not an Arabic-derived name itself.
No, the name Humayun is not directly mentioned in the Quran, though the concept of divine fortune (yumn) appears in Islamic texts.
It is Persian but widely used in Turkish-influenced Mughal culture; the pure Turkish equivalent would be Kutlu or Bahtiyar.
Yes, despite its imperial history, it is now uncommon, making it distinctive for modern use while retaining deep historical roots.