You're right that Trump is not necessarily representative of other Republicans. But I think the skew is actually the opposite direction of what you're saying. I think Trump is actually less likely to be favored by wealthy people vs say Bush.

Look at this polling of support of Bush vs Kerry by income level[1], as income rises support for Bush almost always rises, and support for Kerry almost always decreases.

[1] https://www.cnn.com/ELECTION/2004/pages/results/states/US/P/...

I didn't mean to suggest anything about the directionality of the skew, just to mention he's not a classical conservative and there's likely some skew between supporting Trump and having conservative political leanings.

(On a side note, there's some smaller skew between voting Republican and having conservative political leanings. I'm conservative in fiscal policy, foreign policy, and favoring action at a local and state level, but liberal regarding most social policies, criminal justice reform, and environmental regulation. I think government enforced price transparency plus a German-style universal healthcare system via private insurance decoupled from employment is preferable to either a US model or a Canadian/UK-style single payer system. I've always registered as a Democrat.)