My guess is that none of the current crop of contemporary singer-songwriters will be remembered in twenty, thirty years time to anything like the same degree as the artists you name.

I have seen many, many performances by many "name" singer-songwriters, and while I enjoy their performances well enough and will continue to support travelling musicians, there is nobody around today writing memorable songs with memorable melodies in the same way that Paxton, Simon et al did. IMHO

Murray