The first photot looks like it's the only one that could be Yarrow, to me. It's hard to tell. The rest all look like QAL, simply because they are more organized looking, with a definite center area. QAL often has a small black or dark center.
Yarrow tends to look more irregular, like a cloud. I used to have a whole bunch of them a friend gave me, in lots of great colors, pink, lavender, yellow, orange and red. They were fabulous, but they were also rampant. I moved them to a shady, less hopspitable area, hoping that it would slow them down. Unfortunatly, I lost most of them.
There was a funny little sort of inchworm that loved to adorn itself with tiny yarrow petals in order to camoflage itself from predators. We'd cut the yarrow for
flower arrangements and the arrangements would be animated with these cute little guys walking around in their fancy outfits. I miss them.