The people we do know for sure will be part of Deadpool 2’s X-Force are Zazie Beetz’s Dominio and Terry Crews’ Bedlam, as well as Shioli Kutsana, Bill Skarsgard and Rob Delaney’s characters.
Judging by her powers, Kutsana is likely playing Surge.
Which brings us to the cinematic version of the X-Force.
Even with his powers and talents, Cable is too much for Wade to deal with by himself, so he’s turning to others to help him out.