Quote Originally Posted by Gramul View Post
You've just listed two.
And from what I've researched, progression goes:
Wave/Allagan>Atma/Wheathered/Tidal>Crafted/High Allagan.

Forgive me if I'm wrong, but couldn't you go Levi>HM Levi>High Allagan instead?
Only Extreme Leviathan drops weapon, and it's i95 (upgradeable to i100 with a rare drop from the same instance itself). HM Levi drops nothing except craft mats.