I called Trump a populist about 30 seconds after his announcement. With a populist there are always things they say that we can readily agree with, things we have longed to hear someone say for a long time. The populist then convinces that he is the only person on earth able or willing to get these things done.
The populist ever the blustering bully lauds his initial popularity and demeans any person or organization that refuses acclaim his accumen. The one thing a populist will not give you is how things will be done. I will get a country to do something but I will tell you how to do it.
The populist will tell you what he will do but not how he will govern; and that is dangerous.
You have described Trump pretty well, although I would rather have someone who simply wants to push greatness than a more specific agenda that will be frustrated by poltiics. Another important issue to me is character. Trump is something of a megalomaniac, but has some decent personal values.