Leo risings tend to speak in measured tones, and/or a story-telling tone, like they're giving a speech.
Even the gushier ones tend to keep their head straight (and stable). You won't catch 'em head-bobbing much. They might touch their hair, but that's about it.
Keeping the head steady gives an aura of dignity (guess that's the Leo).
(Measured tones thing applies to Leo mercury too, but the difference seems to be that Leo mercury also speak in clipped tones. As a way to give weight to each word. They take pauses, *dramatic reflection*, speak slowly and with emphasis).
^ Speaking only of some celebrities with Leo Asc (like Miss Monroe, Kyle MacLachlan and the like), . I don't know if I know any in real life (lotta birth times unknown).
have also tried in many ways to somehow puzzle this. The best thing I can do is to consider what a person wants to show us, the viewer. Is it their strength, their attitude or their dominance or vulnerability or popularity? Does this person want to show me their subjective side? Or something logical? This gives me a clue into their astrological chart. Sometimes the ascendent and sometimes I see a very complex personality which points to heavy influences from outer planets.
So it's more a tuning into the elements and the cardinal/fixed/mutable and seeing what I sense. That's been the best as of yet in my attempts.