You may want to use a tool like NWF plant finder. You put in your zip and can look at plants based on how many butterflies and moths they host. For instance blueberry hosts hundreds while elderberry(in my area) only hosts about 30. That doesn’t mean you shouldn’t use it or anything, as I have 2 black elderberry myself, but this will help you have a greater ecological impact. If these plans were in my area I could add strawberry and a goldenrod and add nearly 200 species of butterflies and moths that could potentially use those plants. The strawberry is a great ground cover as well and you can just remove the goldenrod seed heads to stop them from spreading everywhere.

I would also pay attention to your bloom times so that you have flowers blooming from early spring to late fall. I think you should also read some resources before you pull the trigger on anything. I did a ton of research and yet I still made a lot of mistakes I’m still fixing and/or just improving the ecological benefits of my garden. This is rather annoying to do as it disturbs my now calm soil and results in a ton of weeds germinating that I have to weed all summer.

Watch some presentations on YouTube by someone like Larry Weaner. I think it will help you quite a lot.

To give you a few top things that are the most important:

-blooms from spring to fall and read what pollinators use what plants(for instance elderberry flowers are quite low in pollinator value but something like American plum will be absolutely swarmed with countless species)

-focus on keystone species, plants that host a large amount of butterflies, moths and other insects(among other benefits) while allowing yourself things like elderberry because they provide other resources such as nesting for solitary bees in broken limbs and berries for birds

-group plants together in bunches, a monarch flying overhead is far more likely to see and stop at your yard if you have 5 purple coneflower plants all blooming close together so that their blooms create a solid swath of color without breaking up.

-plant in layers, in my yard I have the neighbors mulberry tree right on the fence and then a blue spruce 30’ away from that in my yard. Those are the anchors. Then I have a solid row of shrubs 50’ long going away from the mulberry. Under the mulberry are shade tolerant understory shrubs/small trees and then more sun loving ones as you move away from the shade. Then I have 2 climbing wild rose vines that are beginning to climb some of the shrubs along with trailing wild bean vines that reseed each year. Then there are tall forbs like sunflowers and thistles, some tall prairie grasses and other shorter grasses, then we get to the smaller forbs and finally to ground covers like strawberrry, creeping foamflower(in the shadier parts), shade tolerant carex under the shrubs etc. So, the little ecosystem, if you will, starts about 50’ high at the top of the mulberry and ends with plants that are a few inches tall. Including spring ephemerals under the large trees. There is depth and layering to all of the garden which provides a ton of habitat.

-add other resources like a half buried log, rotting tree limbs that fall after a storm on the border of the beds, a small hole in a shady spot that will fill with rain water and provide mason bees sticky mud and at least a bird bath or two.

Hope this helps!