Thanks for the update.
Red Star has been under the Lesaffre umbrella for some time, although the consolidation of dry yeast products seems to be a more recent development. It looks like they are down to basically two dry yeast products--ADY and IDY--which apparently will continue to be marketed through their existing channels and brand names.
At one time, the SAF Gourmet Perfect Rise yeast was sold as a "universal" yeast that could be used in place of any other yeast, active or instant. I notice now that SAF treats the Gourmet product on its website as being an IDY yeast, although I don't believe that they label it as IDY. This is consistent with the manner in which IDY is marketed by all of the major yeast producers to consumers. You will almost never see the IDY designation applied to consumer retail yeast products, only those sold to professionals. Instead, you will see IDY disguised as "bread machine" yeast and, in some cases, "fast acting" yeast or some equivalent expression like "Rapid-Rise" or "Quik-Rise".