Jem Aswad Senior Music EditorThe Weeknd, Doja Cat, Ty Dolla $ign, Brandy, Bebe Rexha, Nav, Bryson Tiller, French Montana — that’s not the top of a 2020 singles or albums chart. Those are just a few of the artists handled by the rapidly growing Salxco, the management-and-more concern founded by Wassim “Sal” Slaiby.