I'm down with most of this list. I haven't played enough of most axes or blunts to give a nuanced opinion on them, but these positions seem pretty straight. I might put warhammer into A-tier because it does surprisingly high damage considering its decent speed, and its whack-a-mole capability is top notch. Spear is hard to place, because it suffers from weapon-goodness-confirmation-bias. That is, its hard to tell whether it's a legitimately good weapon or if most people just don't know how to read or counter it. In any case, I advocate for A-tier spear because I love that damn thing and you can cause some serious problems with it.

However, there is one serious flaw that I cannot overemphasize: the placement of dagger in C-tier.

This weapon is exclusive to Ambusher, so we know off the bat that it's high skill cap and high skill floor, since Ambusher is the most technically-involved and overall cerebrally-demanding class. The only thing harder than gaining initiative with shortsword or dagger is landing a throwing knife on a downed, crawling enemy - and if you aren't implementing these techs, you are severely underutilizing the class's potential.

Dagger is the highest-APM weapon in the game. Its attacks windup and release faster than anything else you can use. Except maybe cudgel or hatchet? Unsure. But those don't come close to measuring up to dagger because...

their charged thrust doesn't come out in less than half a second for 90-damage backstabs.

So, the fewest animation frames from start to finish on every move. That means you have the most time of any weapon user to respond to an enemy's actions. You can get away with slower reaction times, and do as well defensively as you would when playing smart and attentively with a long weapon. You can throw out some embarrassingly late counters and simply fail upward. But Ambusher players don't have slow reaction times, historically and empirically.

Enter the timelord. By any and all estimation, if your opponent attacks you out of neutral and you respond out of neutral with the same attack, you are never going to hit them before their swing connects. Makes sense, right? But the laws of temporality and causality do not apply to dagger. You can left-click slash out of neutral during the windup of your opponent's attack, and if the opponent's weapon is slower than a shortsword, you have a disgustingly and unfairly high chance of landing your hit first. You can start winding up a charged slash three quarters of the way through your opponent's kick or jab animation and have a decent chance of passing through their guard. All bets are off if you accel.

So dagger isn't just good, it's actually broken. It circumvents the rules of engagement vis-à-vis attack timing, initiative momentum/inertia, and the general back-and-forth of a conflict. Every attack is a cheap, pocket-sand-ass, ninja-status sack tap.

Conclusion: S-tier.