ER is who I associate the most with rural Whites.
ExtremeRepublican lives in one of the richest counties in all of America, hails from one of the richest areas of the mid-Atlantic and is not just degreed but degreed from one of the most prestigious private schools in the country. Please learn to differentiate between suburban and rural. I know it's harder in this era of suddenly progressive-shifting suburbs in certain locales throwing people off, but it is southern suburbs that are the backbone of movement conservatism and continue to be the backbone even if Atlanta suburbs are moving a tinge (and hardly because of white folks). And the mouthpieces of the modern right-wing movement continue to rise from the same angry suburbs that they always have - north/west Chicago, Long Island, Orange County - even as they are now less representative of their peers rather than any rural area.
Also understand that church-going Evangelicals are some of the richest people in America and that whatever stereotypes you have of his group probably better applies to non-churchgoing cultural Christians in rural areas.
Yeah people forget MTG comes from Cobb County !
It's highly likely we continue to see fire-breathing conservatives like MTG emerge from now left-leaning suburban counties. Actually, it should be more expected, because a certain type of right-winger might be driven to more vocal/"partisan" mentalities upon seeing Democrats take control in their area.