Democrats are always Democrats...even old-time Southern Democrats are mere Democrats. From the beginning they were populist/socialist wealth redistributors and advocated for their states feeding from the federal trough...Richard Russell, Robert Byrd, Lyndon Johnson, Howell Heflin, Herman Talmadge, Huey Long and countless other charlatans, buying votes and wielding power with taxpayer money for decades upon decades.
Your list is selectively editted. You fail to include Strom Thurmond, Jesse Helms and a former Democrat who launched his successful GOP primary bid with a “southern strategy” in Philadelphia, Mississippi, Ronald Reagan.