I would have had to put Sir Alex and Lippi as my top two, just because they are the two I have followed over a sustained period.
I have seen a fair bit of Trap but, as great as guys like Clough and Michels were, having not seen them myself, it is hard to put the list in order.
Same goes for guys like Herrera, Stein, Shankly and many others who I have read about, but have not been able to see much of their teams in action.
Oh, and I thought the coach joke was pretty obvious.