Bakhtiyar
No. Bakhtiyar is Persian in origin; it entered Muslim usage via Persianate cultural and historical channels, especially in South Asia.
Yes. It is historically attested; a well-known bearer is Bakhtiyar Khalji, documented in early 13th-century sources.
No. The name is not a Quranic term; it derives from Persian vocabulary related to fortune.
Yes. Through Persian cultural influence, the name has been used in Sindhi and Balochi-speaking Muslim populations, though it is relatively uncommon.
Informal diminutives include 'Bakhti' or 'Yar' depending on regional custom.