In a sense, it had too many.
In the four pre-Super Tuesday contests in 2016 - IA & NV caucuses, NH and SC primaries - Donald Trump won 32.7% of the popular vote support. Or, to put it another way, not-Trump won 67.3% of the popular vote.
However, his 3 plurality wins, along with a close second in IA, gave him 82 out of 133 delegates.
But even with all of that momentum, he only got 34.4% of the popular vote on Super Tuesday. The Republican Party was not convinced by him at that point. However, his plurality popular vote wins translated to a solid advantage in delegate count.
Even as late as mid-April, he wasn’t winning majorities. From mid-April on, as other candidates did drop out and perception grew that Trump was the eventual primary winner (and the party needed to unify behind him) he did start winning majorities in primaries, mostly in those states he was going to lose in November anyway (plus PA, sigh.)
So I think if the Republican party had single “central casting” politician to oppose Trump in the 2016 primaries, he gets beaten. But because there were too many of them, and since Trump was sui generis in that field, and the delegate allocation rules allowed plurality winners to dominate the delegate count, Trump won.
It’s instructive to notice that Trump liked (in retrospect) to make the large field of contenders into something imposing that he had to overcome, when in practice they were so busy taking each other out (and going easy on Trump so as to inherit his voters when he eventually dropped out - look how well that worked for them) that they cleared the field for him. I mean, for example, Trump tried belittling Marco Rubio plenty in the debates, but it was Chris Christie who landed the punch that knocked Rubio out of being able to portray himself as a serious candidate.
I’ll give you White and Jeffress, but it took a while for Trump to get the rest of the religious right on his side.
That’s from mid-June, 2016. After he had formed his outreach board to evangelicals, made the appropriate noises about abortion and judges, and brought on Mike Pence as his running mate, the religious right got on board. Having an opponent who had been demonized by that same religious right for a quarter of a century helped.
At that point, it was pretty much all transactional. But after the narcissist was beamed into homes around the nation 24/7, and evangelicals had made his cause and their cause the same, it really turned into a cult of personality, and has remained so ever since.