Autumn clematis: all across the hilltop, whether this is the native ‘wild’ or the introduced, I honestly don’t know. I know our’s is the introduced type. (ivory)
Goldenrod: at least five types (yellow)
White wood aster (heart-shaped leaves): a bit early, it absolutely blankets the woods here (white)
Whorled wood aster (white)
A variety of asters, from the tiny calico types to the big, purple New England types. (I figure if the botanists can’t tell them apart, I probably can’t either) (whites/blues)
Blue Lobelia (blue)
Red Lobelia (cardinal flower) (RED)
Jerusalem artichoke (a good clear gold)
Lingularia (a mustard gold)
Indian tobacco (small blue flowers)
Black eyed susans (yellow)
Pholx (paniculata) (white/pinks)
Shasta daisies (white)
One late white hosta (white)
Morning glories (dark blue)
Scarlet pimpernel (red)
Marigolds (yellows/oranges/reds)
Sunflowers (yellows)
Hyssop (dusty violet)
Monarda (red)
Jewelweed (orange and yellow)
Some rebloom on the Weigelia (red)
Hydrangeas (white/rose/blue)
Caryopteris (blue)
Japanese Anenome (pink)
other…
Acair Fearann 
With Autumn Clematis it only takes one plant quickly establish a colony fast!
Thankfully, it doesn’t quite manage it around here, just a touch too cold for it to seed itself with abandon. I’ve only had one ‘volunteer’ seedling actually manage to establish itself. Interestingly, that one landed in a mostly buried pot in a transplant bed, which may have boosted the soil temperature just that much.
The roadside clematis appears to be mostly the true wild autumn clematis.