What would you call those ones on the far right? I've always thought they were 'voulges'.
[But one thing I've learnt is that trying to pin names on medieval polearms is essentially pointless]
Yes, I'd call voulges or vouges the two on the far right.
"Vouge" in French also means a rather similar tool for tree pollarding (although the word is old-fashioned and no more used in modern tool shops).
The two in the center could probably be called guisarmes or glaives.
A late 14th century poem written in old French about a group of Bretons entering Italy in 1376 mentions that they were met there by
"Grant foison de gens armez, Et de vilains o grant gisarmes, Qui nous cuidoient faire nos barbes"
( = many men-at-arms, and commoners with great "gisarmes", who believed they would shave our beards)...