They all share the common trait of being inexperienced and easy to push around, which shows a lot of insecurity on Murray's part.
That said, from worst to least worst:
1)Clouston:
Should not have been an NHL coach, had zero experience with media and ran Heatley out of town. He couldn't adapt to his team either.
2)Hartsburg:
A screamer and another guy that should have been an assistant coach or just not hired at all. Wasn't suited for the team.
3)Paddock:
I hardly even remember Paddock but he seemed pretty inefficient.
2)Cameron:
He's here because of Melnyk, he's been a loser at every level, has difficulty expressing himself and for a communicator, he screams too much behind the bench. He still hasn't addressed the defensive deficiencies either. That said, he hasn't lost the room...yet, but he's been bizarre of late.
1)Paulrus:
He's the least worst of the bunch but he got short-tempered and his decision making got worse and worse as his tenure wore on. The only reason I put him here is that he was an entertaining post-game guy. "Player 61", "Shake, shake, shake it off" and so on, none of it really made up for his deficiencies, but at least it papered over them.
Once Murray goes, would be nice to have an experienced coach...