Photoshop CS6 and CC will not show profiles that don't apply for your printer.
Any profile that has the wrong colorspace (ie: CMYK for an RGB printer) or is not an output profile (scanner profiles don't apply) will not be displayed.
Also, we've seen some corrupt profiles generated with bad CxF tags by certain versions of profiling software.
Thanks for your reply. I have been using this printer for some time but with a much earlier version of Photoshop. With that combination, all of my Hahnemuehle papers (profiles downloaded from them) were listed.
I can't understand why a more recent Photoshop should have fewer settings. Should I remove the profiles from the spool>drivers>color folder & download them afresh, perhaps?