The only other alleged variety is the Orang-Pendek, a crypto-animal, and those attributed to it look like a gorilla’s. Neither one looks like Neandertal.
Gorilla male foot:
http://www.worldofstock.com/stock-photos/closeup-of-gorilla-foot/NAN2887
Still looks more like the Neanderthal footprint than ours do.
Scholars who studied Neanderthals early on claimed they had prehensile feet:
That accords quite well with the real footprints but not, as I note, with reconstructions meant for idiot yuppies such as you see in the Natural History Museum, which as the image clearly shows, have human-like feet and, again, the problem appears to involve the pseudo-religion of Evolutionism.
Boule's claim of them not being able to completely extend their legs or stand totally upright has also been borne out and is accurate.