not all of the Muslims are in the quraysh family.
Usman (R.A) confined the recitation of the style - of the - Quraysh tribe...
The prophet (SAW) was hoping that the pagans of Quraysh and in Arabia would accept the message of Islam peaceful also wanted to counter the Quraysh war mongering attitude with a spirit of peace.
Quraysh
Abu Safayan
There might be, but probably the chances are they don't know that they are from Quraysh descendant or have changed their Family/Tribe name.
He was pesecuted by the quraysh. He was hounded by them.
they planned to kill him
Abu sufyan
Quraysh, the clan which he belong to .
Quraysh tribe
Abdu'l Muttalib, who was chief of the Quraysh and Guardian of the Ka'bah.