I have Halion Sonic Factory, SE artist, SE basic, SE Hybrid, Sonic SE Pro showing in my Steinberg Library manager, I have no idea what they all are!
Is there a list of what is which and why they are not just one (or perhaps 2)?
I don’t know what Steinberg apps has installed which and how they all tie together either in Nuendo or Dorico.
These are just sound sets for Halion.
If you are on the load page and click on the Instrument set selector (yellow drop down menu), select one of the sets to see which sounds are particular to that set