A reader sends in his analysis. It's pretty much how I read them myself.
Donald Trump: Alpha. His mug is featured on the dictionary definition of the term. And whenever the media (or Jeb) try to make him out as whiny or petulant, video footage of the events in question invariably show him remaining calm and cool, every single time.
Ted Cruz: Beta, with a bit of Sigma. Seems to be instinctively serving as a lieutenant to Trump in some aspects, by cornering certain voters who won't warm up to Trump, such as the evangelicals. Has a Sigma streak with his willingness to offend the Democrats and cuckservatives running the Senate, and which seems to have inoculated him against being an Establishment sellout, or at least less than Rubio or Rand Paul. Indeed, he seems to be rising above the less-"offensive" Rubio and Paul, despite Rubio's backers having spent far more money than Cruz's.
Marco Rubio: Beta. Confident, a smooth talker, and has an ex-cheerleader wife. But, he seems to be falling into being a lieutenant to the Establishment, and is weak on immigration. During a prior debate, there was an interesting incident when Jeb tried to attack him, and Rubio dispatched him effortlessly, but also took great pains to be diplomatic about it.
Ben Carson: Delta. If it wasn't for magic-negro-itis among certain Republicans, he would be nowhere.
Jeb Bush: Gamma. He simply can't understand why that "jerk" Trump is leading the polls, when he should be King by rights because tens of millions of dollars, being "serious", or whatever. Also, note how he keeps going at Trump in a classic Alpha-Gamma conflict, whereas all the others (Graham excepted) seem to learn their lesson after trying once.
Chris Christie: Delta. Pretty much what you'd get when you take a Delta politician with extra Joisey attitude and somewhat more Establishment money and support.
John Kasich: Delta. Essentially Christie with less aggression and more Establishment support, or a Delta version of Jeb.
Rand Paul: Beta. He is ranked fairly high, with quite a lot of self-confidence and poise and an attractive wife, but is doing more poorly than one with his rank would be expected to. However, I think Trump, Cruz, ISIS, and the Islamic invasion of Europe have starved him of all his oxygen, since he seems to be in denial that Islam is at all a malign force, blaming all the foreign problems we're having on neoconnery. Also, he has a bit of a reputation as being too willing to play the Beta to the Establishment, a la Rubio.
Lindsey Graham: Gamma/Lambda. If he isn't in fact gay, he's a classic Gamma. The video of him smashing his cell phone after Trump gave his number out is a great example of a Gamma reaction to a slight. In addition, he seems to dislike Trump more than any of the other candidates, except maybe Jeb. Even his claiming credit for beating back "isolationism" upon ending his campaign showed Gamma delusion, as voters are still gravitating toward candidates who don't want to take out Assad and do want to keep out Muslims: Trump, and Cruz to a lesser extent.
Huckabee, Santorum, Pataki, Gilmore, Jindal, Perry, Walker: Deltas. Very much average Joes with no distinguishing features.
And on the Democrat side:
Bernie Sanders: Gamma. The fact he can't quite make any traction against Hillary despite his popular attitudes regarding trade and Wall Street, along with his weak reaction to the Black Lives Matter supporters, makes it crystal-clear where he really stands.
Martin O'Malley: Delta. His wife is cute, but he can't make any headway against Hillary or Sanders. Democrats don't like Deltas, as a rule.
Jim Webb, Lincoln Chafee: Low Deltas, or high Gammas. But honestly, what psychologically healthy white male would be a Democrat politician these days, anyway?
Joe Biden: Beta. In fact, his relatively high sociosexual rank for a Democrat may provide one reason for his being an important Democrat politician, despite his lack of any distinguishing characteristics otherwise. Also see: John Edwards.
But in summary, at least on the Republican side, it's uncanny how much of a factor sociosexual rank is when considering how well each candidate is doing, barring a couple of easily-explainable exceptions (Paul and Carson). Money is also a significant factor, but much less so; it is simply why Jeb is at 3-5% rather than 0%.