Someone posted a similar group on LFGSS recently and I trawled through the catalogues then.
You're correct that groupset names were added to components from 1995, so these are all C-Record era ('88-'94).
If memory serves, the Ergos are 1994 Athena: the black shift levers are unique. Only a couple of different Ergos were produced pre-'95, with Record, Chorus and Athena using the same part.
Again from memory, I think the rear derailleur is 1993 Veloce. Both Veloce and Athena had closed upper jockey wheel cages and concealed lower pivot bolts, but Athena had "Campagnolo" engraved on the mounting bolt.
Front mechs are difficult to pin down, with few differences throughout the C-Record era. On account of the finish I think this is Veloce and from the latter period ('91-'94).
As I say I'm working from memory, but the above is a good starting point and gives you an idea of what to look for.
EDIT
Re-reading the thread and Foz's comments in particular, I think he is right (or at least I am wrong): presumably the name has just rubbed off of the levers.