The Légion Hanovrienne did not carry an eagle, the infantry received a Model 1804 colour but the pole was surmounted by a spearhead and not an eagle

source : Guy Dempsey jr. - Napoleon's Mercenaries, p. 171

The Légion du Midi - received in 1805 - three eagles and 1804 model colours

source as above, page 155

I strongly recommend this work - it is a treasure drove of information - very well researched and outclasses by far works as by Elting or H. Knötel

You would have to check each Légion about the details of colours, eagles and standards