Don't know much about these bands, but here are what my ears tell me basing on a cursory listening of the clips you provided, so take this with more than a grain of salt:

Hosanna: Vox AC 30 with a little chorus and delay

You are Good: also Vox AC30! With a higher drive setting, and a "classic distorsion" pedal in front for the distorted rhythm part

Monster: higher gain territory here, where I'm far less experienced. Some of the high gain amp models on the pod (e.g. the treadplate or bomber) will serve you well, with a very dry sound. Beware of 'mid scooping', because while it's true that these tones are relatively mid-light, they also have tight bass, which is too easy to render flabby with excessive lows. Anyway, be aware that that particular "wall of guitar" sound is achieved in the clip by doubletracking the guitars (2 guitars playing the same parts on L and R), and it won't sound exactly the same with just one guitar no matter what.

JC: couldn't access your clip so I listened to this one: http://www.youtube.com/watch?v=A3HHoODbZjQ

The "cleanest" guitar sounds still like an AC30 with a very lavish reverb. The distorted parts could still be achieved on an AC30 with a stomp in front, or by one of the lesser gain marshalls.

I know this isn't probably very useful, but it might be a starting point... Good Luck!