I'm always looking for more lates, because the early season weather is usually dodgy.
Location seems to really make a difference with some cultivars. Winters here are mild, and the daylilies start to grow very early, yet it's cool at night, so the peak volume of bloom is about the third week of June. This climate seems to throw some cultivars off schedule, but not all.
(registered bloom season in parentheses)
Far From The Madding Crowd (M) finished up about a week ago
Sun Temple Spirit (VL) blooms Early-Midseason here
Palace of Lights (M-L) started about three weeks ago, still going
Gaudy-Gaudy (M-L) started about three weeks ago, still going
I'd rate these four as consistently "late" here, they commenced blooming within the past week;
Chateau Belair (M-L)
Sears Tower (M)
The Dream Society (M-L)
Yadda Yadda Yella (VL)