Yes those look like top clamp Rotary feet.
These are the stort of attatchments that will work with your 115, the same feet as for model 128. Singer had a series of general low shank models; model 15, 27, 28 (as well as 128 and 127), 115, 66, 99, 201, 327, and a few others.
I use the general straight stitch foot, zipper foot, felling foot (two widths), quilting foot with guide, darning foot. I think I need the bias binder foot for my next projects to make neat finishes on jackets and trousers.