Proving trump isn't grounded in traditional conservatism is easy. Read this.
How the Republican Party Forgot It Was Conservative
And why, apparently, most Republicans don’t care
prospect.org
He realized his brand of populist demagoguery was better suited to the Repub party so he decided to call himself one, and run for office as one, after previously being aligned with D positions on a number of issues.
Proving you are a cultist is more problematic. I can't get in to your head. But I can observe the factually unsupported, fantastical beliefs trump's cultists hold. The most obvious one being that he won the 2020 election. Then there's Don's recent depiction of himself as a healing deity. Only a cultist, like you, could see that and not renounce their support for him. Do you still support him?