He ran as an 1880s Democrat perhaps.
Really, he ran as a racist and a transparent fraud. His pitch was to the hardcore bigot wing of the party, unlike say Bush Jr who was courting the religious right. I mean obviously there's a fair amount of overlap there, but the neo-cons forged an uncomfortable marriage between foreign policy hawks and bible thumpers, he went more for the secular bigots who tend to be more isolationist. All just different brands of social conservative.
Economically, he has no coherent policy because he doesn't give two shits about economics outside of lining his own pockets at the public's expense, however no matter which group of bigots is bringing in the rank and file votes, the small percentage of rich assholes who suck the blood of the party call the shots when it comes to economic matters, and so their game is the same as always - cut taxes and don't pay for it because that's too hard and we'll just blame the Democrats for the deficit anyway.
So yes any way you look at it, he's a conservative candidate. Also he's a lying crook and that always plays well among that crowd kek.
P.S. If you want to position him in 1980s politics, remember that REAGAN passed an amnesty that made the illegal immigrant population of the country full citizens. So he's far to the right of the Republican Party on that one. That would put him at about... well I'm afraid that's literally the American Nazi Party. Active in the 1980s.
https://en.wikipedia.org/wiki/American_Nazi_Party