For model year 1994, the main changes to the rear derailleur range are:
- Record, Chorus, Athena and Veloce get a makeover.
- Stratos is introduced as a new, even lower-end road group.
- Record OR gets a makeover, but loses the short cage version.
- Record OR is the only mountain bike groupset left standing, as Icarus and Centaur are ruthlessly killed off.
So I think that the rear derailleur range might go as follows:
- Campagnolo Record (RD-21RE)*
- Campagnolo Chorus (RD-21CH)*
- Campagnolo Athena (RD-21AT)*
- Campagnolo Veloce (RD-11VL)*
- Campagnolo Stratos (RD-01ST)*
Mountain bike 8-speed
- Campagnolo Record OR (RD-21OR)*
- Campagnolo Record OR (RD-22OR)*
* New for model year 1994
These images come from a slightly tacky pdf downloaded from the Campagnolo web site some years ago. The rear derailleurs are featured from page 14 to page 17.