the french seemed to have a passion for the epee style bayonets, in the gras and the lebel. the gras being more bladelike and the forerunner of the cruciform lebel. they both had the distinctive curved 'blade breaker' lower guard in the 1886 lebel and the last of the french blade-like sword bayonets, the 1874 gras. as the locals were capable of making a bladed copy, and less likely to make a cruciform version, i'd say the lebel is more likely tho it may be a transition type between the two.
the gras bayonet was in use worldwide for a long time:
* The French wars during the useful "life-span" of this bayonet were:
o French Indo-China in 1873-1874 and again in 1882-1883;
o Sino-French War 1883-1885;
o Madagascar Wars 1883-1885 and 1895;
o 1st Mandingo-French War 1883-1886;
o 1st Dahomeyan-French War 1889-1990;
o 2nd Dahomeyan-French War 1892-1894;
o 2nd Mandingo-French War 1894-1895;
o Conquest of Chad 1897-1914;
o 3rd Mandingo-French War 1898;
o Moroccan War 1907-1912;
o World War I (early).
* These conflicts obviously overlap periods of use for other French bayonet models, such as the 1866, 1886, 1892 and 1914.
the 1886 lebel saw service thru WWII, sometimes in shortened form.
the full kit
and what our ethnographic metalsmith would have seen:
and this, en masse
as a final point, the gras had a brass pommel and wooden scales, the lebel all metal, either white metal or brass.