u/CNE_Erika you can see the weighting not being like it should be here
Missing 1 spot in the Actual Alchemy mission, that has the animal tag, and severel animal tagged crusaders with the gold bonus rune are not weighted 1st, but it is weighted according to tag, and then EP
Not that I believe it will be fixed
So Princess Val is a starred Crusader, which is why she's first.
Best Fit for Mission is still just the default old sort, so calculating how much success percentage the Crusaders will contribute, based on the mission requirements.
It doesn't take into account runes. That's only if you choose a rune filter that Crusaders with the matching rune will sort first.