Off the top of my head... there was about a 20 year period of migration that started with Truman's desegregation of the military and culminated in the Goldwater/Nixon Southern Strategy in the late 1960's.
Senators like Strom Thurmond and John Tower. Other senators left the Democratic Party but remained quasi independent, like Harry Byrd (he didnt want to lose cush committee assignments). Notable switches in the House were members like William Cramer, Edward Gurney, Dave Treen, Iris Faircloth, James D Martin, Bill Dickinson, Bo Callaway, Albert Watson, Thad Cochran, Taylor Hearn, WD Workman, Marshall Parker, Henry Hyde. Governors like Mills Godwin. RNC chairs like Guy Gabrielson.
There are also a lot of up and comers that were either state officials or worked for democrats, but made the switch to republican before attaining prominent office. Bruce Alger and Jesse Helms come to mind as the most prominent among this type. However, in this case it's often harder to be certain about why they switched parties since winning in the South by the 1970's most often meant running as a republican, so your party allegiance was sort of baked in if you wanted to be successful.
This is a good book examining the state level stuff if youre interested.
I have my U.S. History degree from Northwestern, that how I know what happened.The mordern republican party is not the party that cares about securing voting rights for minorities like the original republican party was. The modern republican party does not care about protecting national parks like Teddy Roosevelt did. They don't care about busting monopolistic companies like Teddy did either.
I doubt you actually care about proof of the two parties switching because if you did you could look it up but here goes. https://www.history.com/news/how-the-party-of-lincoln-won-over-the-once-democratic-south
https://www.amazon.com/Dixiecrat-Revolt-Solid-South-1932-1968/dp/0807849103
> a made up theory called "Southern Strategy" that is taught as truth inside the liberal indoctrination centers formally known as high school and college.
The sad part about your point of view is that you're even aware of the exact reason why you're wrong. You've just arbitrarily chosen not to believe it. The Southern Strategy is a well supported, widely accepted phenomenon that has been thoroughly documented, often in Republican's own words.
If you actually want to learn about 20th-century southern politics, I suggest reading The Dixiecrat Revolt and the End of the Solid South. The author explains the origin and escalation of Dixiecrat dissatisfaction with the national Demcoratic party, and the role that their movement played in breaking white southerners away from the New Deal coalition, setting the stage for the rise of the Republican party in the region.