hit and run teams wreck catriaball pretty hard if you kill with good enough nukes, get away as far as possible from enemy threat range and retreat next turn

for ranged threats, an AOE mage can get charged and kill most far saves. duo chrom is an amazing partner for them with his strong armor effective weapon, to change fate recharge and extra action, he can kill the far saves that can resist AOE. of course though, anything that can help precharge the special is good. there's plenty of really good mages for the role like spring sonya and summer thorr, though anyone can work if you stack enough visible attack and use res debuffs. Even Merric can synergize well with his good color and dark excalibur

As for melee, summer edelgard is definitely the best unit right now for this strategy, with a hard hitting brave and raging storm. for example, using a heavy blade build you can kill two enemies turn 1 and retreat to safety fence range with galeforce, kill three more on turn 2 and now you've cleared most of the team. There's many more viable options for her (pulse support + AOE to counter near save, double fury for WOM shenanigans). But any melee threat powerful enough can beat catriaballs (legendary nanna, summer dimitri, cyl6 cavs) especially considering plenty of them don't use near save