I almost always use a non-straight stitch on my machine sewn bindings. Mostly I use serpentine and three step zigzag. I also use the overcast stitches on the edge of quilts before I bind them if I am away from my serger. However all of those are what my machine calls “practical stitches”, not really decorative. On my non-vintage machine I have used a feather stitch and a few others on baby things, but it is rare.