I've compiled a list of polymerous daylilies and the % of the time each one polys:
https://cottageinthemeadow.pla...
There are lots more daylilies that poly that are not listed as such by the AHS. That's because polys were not considered a separate group until sometime in the late '90s, if I remember right. One of my hybridizing goals is to create more daylilies that are 100% poly.