Original: Recent phylogenomic studies have surprisingly shown tinamids as the sister group of Australasian\/Oceanian ratites (cassowaries, emus, and kiwi), with South American ratites (rheas) and African ratites (ostriches) as successive outgroups.
Simplified: Those are the (cassowaries, emus, and kiwi). South American ratites (rheas) and African ratites (ostriches) are also related, but more distantly.