> The funny thing is, that the GOP is not "conservative," in any way, whatsoever. They are extreme

The word that describes them the best is reactionary. As a political ideology it fell out of favour some time in the late 19th, early 20th century with the fall of the various reactionary regimes (Austria under Metternich, Imperial Russia).

But the GOP, and some other parties looking to them for inspiration, are reactionary. They are opposed to any social progress and want to go back.