Those type of weapons were only invented, when plate armour was introduced as bladed weapon became less effective. So it makes sense that ancient nord version doesn't exist. You also don't need a warhammer to take out werewolves who are in rags, and as for Skyforge, Eorlund is the best smith and makes his steel blade the sharpest in Skyrim. It doesn't take much skill to make a dull war hammer. I do wish the silver weapons were upgradeable using silver ingots though.
There weren't any blunt weapons before plate armor? Did not realize that. A club or a morningstar seems like it would be one of the simplest weapons to produce cheaply.
And actually, silver weapons don't have any special effectiveness against werewolves, but can provide a big bonus against undead. Not sure if this was an oversight on Bethesda's part or if the Silver Hand just doesn't know that werewolves aren't especially affected. And all I know is that Eorlund tells you he can make you any Skyforge weapon you want, then proceeds to show you like 4 options in the dialogue

, I found it misleading.
Oh well, at least mods do and have fixed this stuff, including allowing silver weapon upgrading/crafting and different scimitars.