Moderates
1. Pataki
2. Graham
Establishment Conservatives
3. Kasich
4. Christie
5. Bush
6. Fiorina
Establishment Conservatives That Moved Towards Right
7. Trump
8. Jindal
9. Perry
Elected Tea Party
10. Rubio
11. Walker
12. Paul
As Conservative As It Gets
13. Santorum
14. Carson
15. Huckabee
16. Cruz
These guys may be very socially conservative, but that only comes from their populist conservatism. Huckabee wants to maintain social security and raised taxes as governor. Rick Santorum wants to raise the minimum wage and reducing legal immigration to "protect workers". They could definitely pass as conservative or southern Democrats 25+ years ago.
Huckabee yes, Santorum OTOH never would have fit in with the dixiecrat mold. During the 2012 election I remember him openly denouncing the idea of states rights and quoting Lincoln. If anything he could fit in with old school northern bible thumping Republicans except that he's Catholic instead of some type of Calvinist.