Hold on. I got the art book.

And the Burmecians/ Cleryans aren't that tall, actually. Only about half a head taller than Zidane, who is used as the constant for relative heights.

Beatrix is actually SLIGHTLY taller than the average burmecian female (though shorter than the males)

So, the order would be...

Amarant (given his height while stooping, he wins this easily)
Steiner
-Beatrix- (beats freya by a slim margin, though her hair may give her the illusion of slightly more height)
Freya
Quina
Zidane
Sarah (Dagger)
Vivi *without hat*
Eiko

It's interesting to note that Dagger was- in the original Amano sketches- blonde and holding a slim, curved sword.