I’m not sure that area will get full sun with the house as it is, but work with what you have. :)

IME, The columbine will bloom first from that set…. followed by the sib iris, then the liatris. The butterfly weed, coneflower, rudbeckia, and bee balm (monarda) will bloom through the summer. That rudbeckia could be 3-7’ tall, so it should be at the back. The monarda will run, so watch that.

here’s a quick sketch of what i think would work for layout.

If they are bare root plants, be sure to soak the roots in water for about an hour before planting them.

Only food for thought: What about tucking in a plant or two parsley, fennel, alyssum, lantana, marigolds or zinnias? Even a pot on the nearby deck would work. I could almost envision a combination planter (I bet I'm not the first) of several of these, both nectar and host plants, for many different butterflies. Hope this helps. So much fun to sit and watch those lovely critters.

;)

In Party Music's sketch I would switch the liatris and the butterfly weed. You didn't mention which vendor you ordered from but in general I'd expect the plants to be small (easier and cheaper to pack & ship) and it will take a couple of years for the garden to fill out. Rob's suggestion of filling in with annuals is brilliant.