#2: fleabane? Although in your sample, the petals look a little more "fuzzed," in the sense that the petals are a little more haphazard and not as straight out from the center, as compared with these fleabane pics:
Google image search results for fleabane
#3: It's an aster. Because it took me 3 years to identify my asters as calico asters, I see them everywhere, now. However, your #3 doesn't have a beet red / purple stem, which the calico asters do. At least the ones in my back yard! The ones in my front yard look just the same, but the stems are green like your picture. But I never let the front yard ones bloom, so who knows what they are! And I've read that calico asters can have green stems during part of their life. However, there are so many asters, yours could be a different kind. Hopefully someone else here can help you narrow down which aster!
Not sure about your #1.
Is it very fuzzy-feeling leaf? It looks very fuzzy.