Hazel is usually considered the best, young growth is usually straight, thin and very very flexible, whippy and strong. As an advantage it is common and can be cut without harm-to the tree that is. It is used for pea and bean stakes and home decorations, so can be purchased ready cut, but old and not green.
That is for Europe, I dont know about hickory but it appears to be the tree of choice in the USA.
Of course any wood can be used as long it is straight, thin, flexible, whippy and strong.
The exception being spray birches where the branches and knobbles are deliberately used to enhance the sensation!
