i maintain that drumpf's perfect vp candidate would be joni ernst, a female veteran from a swing state who is considered an outsider but does not totally lack experience/legitimacy.
cruz, on the other hand, would be likely imo to pick a running mate from within the establishment, given what his path to the nomination would look like. probably nobody really moderate, but a mainstream republican like chris christie, or john thune. rubio is also a possibility. if he does venture outside of those bounds, it'd be mia love or a different token woman/minority.
clinton or sanders would likely pick someone incredibly boring (kaine, warner, …)
The chance of Cruz picking a
trump-supporter who is very personally unpopular his own home non-swing state is basically zero. Christie is probably done with politics after 2017, though he perhaps has a chance at a Cabinet appointment in some future administration someday (though he bet on the wrong horse, both for 2016 and in the long-term).