Are the secret Aeons always listed in a set order?

[Peter_20]

I just got Anima now, but I still haven't got Yojimbo.
The thing is, I always see that Yojimbo is listed before Anima on every Internet site, and therefore I want them to be listed in that order on my file as well.
Yes, I am pedantic like that. :rolleyes2
But anyway, are they listed in a set order, or do they become listed according to when you got them?

[Heath]

I couldn't tell you to be entirely honest, but I imagine it's a bit like the magic in other Final Fantasy games and is listed in a specific order regardless of the order you get them. I'm sure someone else can give you a definite answer though.

[qwertysaur]

Yojimbo is obtainalbe ferore anima is , so he will be listed first. But the only definate order for the secret aeons is that you get the magus sisters last.

[Tavrobel]

They are listed in order of effort required to obtain them, and usefulness.

Of course, if you play PAL, then it's entirely screwed up, because end-game, Anima > Magus Sisters.