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

• Sport (single pulley wheel)
• Valentino Super
• Valentino Super
• Sportsman

I think that the correct labels might be:

• Campagnolo Nuovo Sport (single pulley wheel)
• Campagnolo Valentino Super
• Campagnolo Valentino G. S.
• Campagnolo Sportman with only one 's'

• Publisher: New Cycling
• Document: New Cycling May 1981 - '81 Derailleur Collection
• Date: May 1981
• Derailleur brands: Campagnolo
• Derailleurs: Campagnolo Nuovo Sport, Campagnolo Valentino Super, Campagnolo Valentino G. S., Campagnolo Sportman