In or about 1986 (there is some dispute over the exact year), a group of conservatives who disliked the interventionist foreign policies and alleged indifference to big government that was being displayed by the neoconservatives, ferociously denounced them, loudly abandoned the conservative movement altogether, and called themselves "paleoconservatives." Most of their names are not nationally familiar, but Pat Buchanan probably belongs in (or somewhere near) this group, since he favors America First isolationism and trade protectionism (tariffs).
Finally, in 2000 Bill Kristol and a handful of younger neoconservatives began advocating a combination of a tough foreign policy and a lean, but muscular, domestic government that they have dubbed "national greatness conservatism." Just how far they will get, it is still too early to say.
So there's a brief guide to the zoo that the conservative movement has become. As for liberalism, far from proliferating, it is hanging on by its fingernails. Have you noticed that the liberals don't even have the guts to use the word "liberal" to describe themselves and their ideas? They prefer to use "progressive" instead. Well, who can blame them?