Then what are they?

You seem to have in mind some set of voters who are the "true Republican voters" and others are interlopers. That ignores the fact many of the groups you want to dismiss as not real republicans have long been a part of the Republican coalition. Social conservatives and religous conservatives have voted Republican for decades, Libertarians have voted Reppublican for decades. The White working class has been a staple of Republican voters since the 1980's.

The difference now is the groups you want to dismiss control the party in many states and at the national level. They turn out the voters for the primaries and provide the bulk of the votes for the candidates in general elections. There is an easy viable alternative for the folks you think are the real Republicans but Nikki Haley lost to none of the above last night.