Merida and Mulan should be the TOP 2. Both can pull off a bow or a sword... Pocahontas can run fast and hide easily in the woods, but I don't think that's enough to equal Elsa's great ice powers.

She's too curious to make it into the Top 3. Sorry, Pocahontas.

Povahontas next, followed by the anxiety-crippled Elsa, who would be unable to really hold herself together.

Merida and Mulan would survive, Definitely.

^^ This is my reason exactly. Snow powers aside I think she's the least able.

She only knows shooting arrows and a bit of sword fighting. When figthing the bear in Brave she almost got killed so imagine her against a horde of zombies

I think mulan would be next.
( please don't judge for my answer)

she'd cripple herself with her anxiety

Merida and Mulan are both combat trained and can survive in the woods. Pocahontas can also live off the land but I don't know how she'd survive zombies aside from stare at them majestically. Elsa would survive because her anxiety caused the eternal winter in Arendelle, so if she freaks out during the zombie apocalypse then she would probably inadvertently save everyone by freezing over the zombies!

Out of the ones left definitely. Mulan and Merida should be the top 2, imo.