three antique chairs

Three more easy pieces to rescue today. The first two are walnut (maybe?) with caned seats and the third is something else stained dark. (but not painted) #1 has carved decoration and #2 has a slat back, at first I thought these two were a pair but with a closer glance they are both simply 'similar' in style, wood, and the cane seats. I find the 3rd even more interesting, a bentwood back with spindles, but it also has most unusually shaped legs with 'ball feet'. (is that a thing?) This one also seems just a little bit narrower than typical chairs with similar spindlebacks, but maybe that's just an illusion. (?)

They're shown here going into safe storage complete with the dust they came with, a quick glance when taking these pics didn't reveal any markings or labels on any of their undersides. Suggestions/comments WELCOMED if anybody can contribute any further info about their style, age, or whatever -- all I know about them is that they appear to easily be 100+yrs old, thus 'authentic antiques'??