My rough translations of the photo captions, clockwise from top left are:

• Cyclone
• Cyclone GT
• Superbe
• Cyclone

I think that more complete labels might be:

• SunTour Cyclone (5902)
• SunTour Cyclone GT (1800)
• SunTour Superbe (2100)
• SunTour Cyclone (1700)

• Publisher: New Cycling
• Document: New Cycling May 1981 - '81 Derailleur Collection
• Date: May 1981
• Derailleur brands: SunTour
• Derailleurs: SunTour Cyclone (5902), SunTour Cyclone GT (1800), SunTour Superbe (2100), SunTour Cyclone (1700)