I used Mistwalker once I had access to it, but my wife used Frostner. We both did just fine. The real star of Mistlands melee combat though, is the Himmin Afl (lightning atgeir). I never thought I'd fight without a shield in Valheim, but this weapon was finally the one that tipped the scales. I ended up using it about 75% of the time...before I eventually converted to mostly Magic (staff) use.

If it really bothers you to not have a weapon of each type, there is a mod by Smoothbrain called "GapFiller" that adds in appropriate weapons (with appropriate damage, crafting, and stamina costs) of each tier to fill in the gaps in vanilla weapon progression. We are now using it in our high difficulty, heavily modded playthrough, and it is very well done and fits in with other weapons of each tier perfectly.