those kepis are very strange !!!
we can find US collar insignias, one looks french, 3 or 4 are belgian
the "golden" kepi seems to be a fantasy !!!
do you have a picture of the inside ?
I agree, these look... different. In any case, the bottom left is an Infantry insignia, and the third one from the left on the bottom is from the Signal Corps
These look like fantasy pieces. not authentic French kepis. Most of the insignia is US Army; signal corps, artillery, infantry, armored cavalry, along with some foreign badges.
By far the most common badge on French military kepis is the grenade, in embroidered form, not as a metal badge.
Check Ebay France; you'll see plenty of authentic examples.