Yes, Vivo Y91 does have the App Clone support.
Yes, Vivo Y91 does have the fingerprint scanner. It also has the face unlock support.
No. Vivo Y91 does not have the hybrid sim slot. It has 2 dedicated slots for sim cards and a dedicated slot for the MicroSD card.
Yes, Vivo Y91 does have the dual rear camera set up. It has 13MP + 2MP rear camera set up.