My Knobkerries (?)

[Protector]

Here is my current collection of Knobkerries accumulated from various antique stores and yard sales. The question mark in the title is because none of them were purchased as Knobkerries. Of the four in the first picture, the third one down was labeled 'primitive drumstick' and the fourth one down was a 'carved wand'. The other two simply had price tags. The bottom two photos are of my largest Knobkerrie at 36 inches long. This one was tucked into a corner with old canes.
So my question to the experts here is. Are they Knobkerries? and can you shed any additional information or insight into possible age, what area are they from, etc.? Any and all comments are welcome.