All "legend" only classes that you can keep when you are not mem

[LtAstros]

I recently got legend so I am trying to get the most that I can. Do you know if there are other classes like chrono assassin where as you need legend to get it but it isn't a legend only class

[Biney]

Legendary ArchFiend and Legendary Elemental Warrior.

[zadkiel2]

Here you have sir:

Legendary Archfiend
Legendary Elemental Warrior
Beastmaster
Chrono Assassin
Deathknight Lord

And then there are some classes that you get free when you buy membership:

Legendary Warrior
Dark Legendary Warrior
Sentinel (For Upholders)

Also there are others that requires daily tokens but with membership you can do it faster:

Pyromancer
Cryomancer
The Collector

Hope it helps