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

• Lark SS
• Lark II
• Lark SPO
• Lark II

The image at the top-right-hand corner is labelled 'Lark II' but is actually a Shimano Skylark II.

So I think that the correct labels might be:

• Shimano Lark SS
• Shimano Skylark II
• Shimano Lark SPO
• Shimano Lark II

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• Publisher: New Cycling
• Document: New Cycling May 1981 - '81 Derailleur Collection
• Date: May 1981
• Derailleur brands: Shimano
• Derailleurs: Shimano Lark SS (D210), Shimano Lark SPO, Shimano Lark II (LK10), Shimano Skylark II