We had tulips laying on a shelf outside, but under a roof overhang for a whole winter and planted them and they grew and even bloomed. Tulips are though as nails!
I have had some bad experiences with dwarf iris drying out too much as this can make them rot once planted, but this could depend a bit on the cultivar/species and storage conditions as well. For that reason I always recommend early planting for these. At home I like to store these in dry sand until planting.
I suspect most of your other purchases should be okay. Once the soil is frozen on the surface, you might want to mulch them a bit, to give some time for them to root. Mulching while the ground is soft could attract rodents. Do remove the mulch early in spring or as soon as it thaws as you don't want the soil to become too wet.
You may have heard that snowdrops sometimes are sold "in the green". This is not because this is the best time to plant them, the best time is as the foliage dies back, but planting in the green guarantees that the bulbs are still alive. When using dry bulbs, these must be planted very early and I wouldn't buy snowdrops at any price this time of year.
Perfectly normal for the anemones to have some greens this time of year, but that is what makes them a bit sensitive as well. They can take a lot of frost, but I'm unsure at what point the foliage is damaged. I hope yours will be okay
