The X3 Reference Guide also shows the Loopmasters, Sample Magic & X-MiX Content Collection being standard although I don't remember installing these. The other suites are all plugins that would have gotten installed with X3 Producer.
If you compare Sonar Platinum to X3 Producer then 'The Studio Mixing FX Suite' is the Nomad Factory Blue Tubes Bundle plus the Nomad Factory BlueVerb DRV-2080 from X3 Producer.
Ok, I had a look at SONAR X3 Reference Guide pages 1466 to 1469 that is a product comparison for the different versions of X3 and compared it to the link Karyn gave us.
