When I read your post, I immediately thought of Stalin.
I consider Stalin a fascist who used the Communist Party to advance a fascist agenda. I consider Trump an obvious opportunist with advanced marketing skills who used the Republican Party to advance his narcissism and quest for personal power.
fas·cism
ˈfaSHˌizəm/Submit
noun
an authoritarian and nationalistic right-wing system of government and social organization.
synonyms: authoritarianism, totalitarianism, dictatorship, despotism, autocracy; More
(in general use) extreme right-wing, authoritarian, or intolerant views or practice.
https://en.wikipedia.org/wiki/Joseph_Stalin