Aiding Split Pushers

I wanna know if anyone has opinions on what champs a mid or jungle can pick when they know they're going to be playing with a split pusher?

I'm starting to q with a new friend who plays tryn. I've mostly played roaming champs with roaming partners so I'm going to be adapting to a new strategy.

I feel like there's a type of champion you can play to help take focus off a splitnpusher. Would it be another champ who pushes fast like Ziggs or Yorick? Or maybe a highly mobile tank/fighter like hecarim or rammus.