Every reproduction of 6th-7th century Germanic style swords that I've seen have fullers. Just think it would be refreshing to see any pictures of a modern reproduction that doesn't have a fuller

*Edit* I just remembered that a couple of the Templ ones were unfullered but nothing more accessible than that.

Perhaps a bit early than you'd prefer, but the Deepeeka Feltwell doesn't have a fuller.
Unfortunately, that's all I could come up with, on the production end. I know Vince Evans has made migration swords sans fullers, and I believe Paul Binns and Patrick Barta have done so, as well.