About the only valid commonality among Trump voters is that they voted for Trump. (Don't worry, pollsters, people get paid for tautology in that biz all the time). That being the defining datum doesn't really help us much if what we're really trying to accomplish is understand the demographics within the Republican party, the conservative movement, or just people who were generally pissed off at the temerity of Hillary being a done deal and don't you dare say otherwise. Common among them is a disdain for the establishment media, a resentment at being pushed around by celebrity pundits and backroom movers and shakers, and just simple ornery cantankerousness at being told what they think instead of being asked. Best of luck putting that into neat little boxes.
IIRC Trump got almost as many Bernie voters as Hillary did and more union households than Reagan.
That explains it. Trump got the dingbats.