You've left out Celtic-inspired swords, which look pretty much the way you'd expect a medieval sword to, though their hilts are different. And Iberian swords which look like a hybrid of xiphos and Celtic longsword.
The la tene swords (which I assume you mean when referring to Celtic swords) are considerably wider and less pointy than medieval counterparts:
And here are some swords found together with the early mail at Hjortspring (and many Celtic shields as well as spearheads, a boat and more items):
These are thus also 4th century and possibly made in a Celtic oppidum in somewhere in Europe.