RB is definitely an ExxP. I believe we could all agree on that?
I haven't watched interviews of him. So my typing would be wrong. But typing people from interviews would be a hard thing to do.
Everyone who is interviewed appears extroverted I've noticed .
He does give a Se dom vibe.
Assuming he is an Se dom I select ESFP hands down.
ESTPs are somewhat tensed and are usually overkills.
RB appears and sounds extremely easy going and peaceful.
(Also gives a slight Hippie vibe that is somewhat xSFP and never xSTP. )
ESFPs and my type are the most easy going extroverted types in my opinion.
Out of that paragraph I extracted. Hippy vibe. I agree that would more correlate with ESFP.
What I can't fathom though is his great opportunism. He literally is a weasel. For example he pretended to be wanting to buy an island (which he couldn't afford), so they met him there with helicopter and wined and dined him and his girlfriend. When it turned out he couldn't afford it they booted him out. The whole living larger than life thing and pretending to be bigger than you are is typical of ESTP. Plenty more of those stories if you read up on him. Most ESTP's I know are like that.
The stunts could either be explained by performance (ESFP) or by tacky opportunism (ESTP). ESTP's do tend to be tacky.