I don't know if he has a label, but he's light years to the right of the RAT's nest alternative (which we've had for eight years). He's an American alpha male, and a patriot. He an outsider, he has executive experience and a general disgust for career politicians.
His message is as right-wing conservative as any I've ever heard (certainly in this day and age) and it is resonating with a hell of a lot more people than just those who would consider themselves conservative "purists".
He doesn't dare betray all those millions of voting supporters he has, to whom he has made big promises in crowds...tens of thousands at a whack.
Build a wall...make Mexico pay for it, deport illegal aliens, fix the trade deficit, bring back American jobs, cut taxes, repeal and replace obamaCare, stop bring in moslems, kill ISIS, take care of the vets, rebuild the military, free the cops, etc etc etc.
What's liberal about the message?
The man is a New York liberal. He is also a crass opportunist whose promises amount to what goes on a bumper sticker. Just take a look at the list on the bottom. Anyone of those an undertaking equal to Obamas promises to stopping the seas from rising. For all the world he sounds like Mussolini. Now, in fact, Mussolini did fulfill many of his promises. Until he made the mistake of partnering with Hitler, he was one of the most admired leaders in Europe. BUT his achievements were achieved autocratically. I dont see any black shirts available to punish the protestors at his rallies. I also see a 69 year old man without the governmental experience of Konrad Adenauer, the 73-year old who served Germany so well after he assumed the Chancellorship in 1949.