1) Jon Hamm
Deadpool creator Rob Liefeld has already named Mad Men star Jon Hamm as his top choice to play Cable, and if those making the movie noticed the positive reaction to that online, you have to believe Fox will at least offer him the role.
That would be a smart move on their part, and with Hamm delving into very different genres by starring in the likes of Black Mirror and Sucker Punch, he’d no doubt be open to Deadpool 2.
He’s a pretty perfect fit for the character as well; Hamm 100% has the look down and is a fantastic actor who you just know would elevate Cable into being more than just another stereotypical grizzled hero. As a result, he should most definitely be considered.