Assuming all of them were emblemed at reasonable amounts of nodes to stand on defense:
Brienne | Kailani | Gill-Ra | Gato | Jahangir
Would be my team. Precisely because it’s very fast Gato’s shield would be useful blocking fireballs.
Although if I were to use Brienne + Spirit Link user, I’d personally just drop Gill-Ra in favor of Ulmer. He’s an attacker that drops defense by the same amount and it lasts 6 turns as opposed to 4:
Ulmer | Brienne | Kailani | Cho-chin | Hawkmoon
That’s actually what I’d do, again assuming they were all leveled and emblemed at reasonable amounts to stand in a defense team. Because they’re not, you can check my team here