As those above me said, /sam, /war and /dnc are all good. Part of subjob selection is understanding that these can all be situational, and you will
probably most definitely want to have multiple subjobs available for different content.
In that regard, I would also suggest having /nin available. You won't use it terribly often, but for some content, having shadows available is necessary for survivability.
"We are Dragoons, and to make short work of foppish cavalry is our bread and butter."
-Bob Shaftoe, The System of the World