The pink and yellow flowers look like violets (Viola), as do the leaves near the flowers. I don't know the species.

Thank you. I've grown poppies before but don't remember their leaves being fuzzy. Wonder what kind of poppy it could be. Wish they had listed what was in the seed mix but surprises are kinda cool too. There's one already blooming that I didn't take a picture of that I think is coreopsis tinctoria. The foliage is not like the first photo above. Maybe that one is lanceleaf coreopsis. There are two others. One got almost completely eaten by a rabbit or something and there isn't enough left for a photo and the other looks suspiciously like a weed.

Plants Profile gives a fairly accurate idea of native range of plants in the US. I find it by typing in the name of whatever plant I want, followed by usda. And notice I said 'fairly,' not 'totally'. Here is a link that might be useful: USDA map for Chamaechrista fasiculata

That's fine. My back yard is a flower and shrub garden for butterflies bees and hummingbirds (and other native, non-destructive insects), and I do use as many native plants as I can, but I'm not really rabid about it unless it's in an area I've reclaimed from The Asian Bush Honeysuckle Menace. It's just an annual anyway, and it's in one small flowerbed.