This fascinates me. I was into the Enneagram well before I was into astrology, and while I don't think it's a perfect system by any means (doesn't allow that very different things can motivate the same person equally--everyone has pretty much one currency, as Dr. Phil would say), it does provide a good way into understanding some basic differences of communication style and motivation.
And there's stuff I don't really agree with. For example, I'm undoubtedly a 6--no question. I'm always looking for someone to put my faith in, but always hating myself for doing that at the same time--even though I feel that my unwavering loyalty and love are also my best qualities. When someone has my loyalty, I'm "down to ride 'til the very end", like the Jay-Z song says, and I stick around long after most people have abandoned ship. And I'm always terrified of being "destroyed" by others. However, some sites say that sixes always lack confidence--
this one, for example, makes sixes seem like a quivering Piglet-like ball of goop, and that is just so not true. Even a non-"counterphobic" Six who knows her place will know also that part of knowing her place is having her domains of authority. Plus a Six has sussed out the situation enough to know that appearing "visibly insecure" and "awkward" will draw unwanted and unsafe attention to her, so often s/he, whether phobic or counterphobic, adopts an ice-princess/tough-as-nails persona. It's thin as wrapping paper, but it's like the eyespots of a moth--meant not to dominate, but simply to scare potential threats away and keep what's hers safe. Someone else wrote about the childlike sweetness and gentleness beneath the heavy defenses of the Six. And I feel like that fits for me too. I hope! I know a guy (Virgo sun/Aqu asc/Leo moon) who I always thought was a 1; the more I got to know him I found he was actually a very healthy and well-integrated Six. But he's got the "eyespots" too.
ANYWAY, that quibble aside--
Interesting that the 6 is the "Martial" type. This fits for me (Aries moon). Although it seems like several of the Enneagram types span several signs. I guess it makes sense that there's no one-to-one correspondence.
I also think that the fact that all my personal planets except the Moon are in houses 8 and 7 influences me to be a 6 as well--since those are houses related to partnership and other peoples' junk
And I've got my Mars-Pluto Square, which makes me, erm, feisty :/
And I'm Capricorn Rising, which certainly helps with the need for rules and structures and the ice-queen veneer.
I'm actually really curious to know which types other Leo Suns are. I sure don't buy the Leos-are-always-power-hungry-performers thing. Of the Leo suns I know...my mom's a 1; then I think I know another 6, an 8, and a 4. Of course mistyping happens a lot. I do however buy the idea that Leos tend to want to look cool and live out a cinematic fantasy, so whatever their type it's gotta be something where they can look awesome, whether it's as Awesomely Talented Performer or Awesomely Capable Sidekick or Awesomely Big-Thinking Reformer.