Well you don’t need to be as particular as someone who’s restoring wild habitat. Look at monarchwatch.org for any of the ones that suit your general region, then follow the link to https://www.xerces.org/milkweed/milkweed-seed-finder and input your state, type you want, and Yes or No to seeds vs live plants to find a place to buy them. Once there, you can play around finding other flowering plants native to your state. Also, many insect and bird species are not so fussy! Hummingbirds and bees love my blueberry bush and bougainvillea and lemon tree that aren’t native at all, as well as my Tidy Tips and California Primrose that are. And there’s a Yellow Warbler who loves eating the little bugs (aphids, mites, I dunno) that infest them.