Control arm bolt is loose.
Assuming one has checked and torqued all control arm bolts and still suffers this type of noise/condition, would bad control arm bushings be a safe follow up? They didn't look obviously worn but are exhibiting fine checking/cracking of the rubber, what little of them I can see. I've got a noise similar to that described coming from the front end of my LJ and I've already checked the fasteners.
