Interesting question. I hope we get some replies with good suggestions.
In my gardens, although I have seen hummingbirds at my daylilies, it's kind of rare, and I didn't think to note if there is a spedific daylily they like.
I was going to joke and answer any daylily strong enough to support a hummingbird feeder, but now I really want to know if there are any daylilies that are known to tbe hummingbird friendly.
I do like to have hummingbird friendly plants in all my gardens, so maybe that's why I don't see them in the daylilies very consistently. There is a silene plant with red flowers that really gets a lot of visits. And pink tall phlox gets a lot of visits.