Whether an animal hunts in groups cannot be read off its close relatives, so pack-hunting Velociraptor does not follow even if Deinonychus hunted in packs.

There are various canids that all hunt in groups, but then you've got things like maned wolves, which are effectively solitary. The hyenas. Spotted hyenas are, yeah, these super social animals, but the brown hyena, the striped hyena, and the aardwolf are solitary. So you just can't do group versus solitary off close relatives or anything like that.