Can you help to identify these frames, bikes or parts?

Wrong.
Track frames have gussets near the seat lug.
Plus beefier seat and down tubes.
Even mine, which is from the 1st generation.

The guys right!
Haven't noticed anything else on giants line up that would fit the description though.unless its some oe random prebuilt, or mauve somethinwe don't get on the uk?

Also used to have a giant mtb in team colours, really distinctive