There is one player each from England, Bangladesh, Sri Lanka and New Zealand in Paul Collingwood, Tamim Iqbal, Thisara Perera and Grant Elliott respectively.
The only countries which do not have a representation in the World XI squad are India and Zimbabwe.
Former Zimbabwe captain and ex-England coach Andy Flower will be the coach of the side, which will arrive in Lahore on September 11 after attending a two-day camp in Dubai.
"I am honoured to have been appointed as captain of such a diverse, attractive and well-balanced side," captain Faf du Plessis said in a statement.
"Like most of the players, I look forward to my maiden tour to Lahore and play my part in the safe and gradual resumption of international cricket in Pakistan," he added.
Squad: Faf du Plessis (Captain), Hashim Amla, Samuel Badree, George Bailey, Paul Collingwood, Ben Cutting, Grant Elliott, Tamim Iqbal, David Miller, Morne Morkel, Tim Paine, Thisara Perera, Imran Tahir, Darren Sammy.