bottom one looks DX but the top one has a straight bar so as far as I know is not a DX, looks like a Roadmaster the more I look at it. Also the springer is Roadmaster not Schwinn at all and something looks funny with the rear fender. maybe the frame is a Schwinn and someone added the fork and fenders from a different bike.
that's about all I know, probably a Schwinn expert will chime in and shed some more light on your bikes.