Those clump images are stunning! It can take 4 -5 years for the normally purchased single or double fans to get to clumps that size for me.
This was difficult, so many really good performing daylilies pinning down a few favorites is nearly impossible, but here are a few....
Jerry Hyatt - gets better every year and I never tire of seeing it.
Memories of Mother, early bloomer with big wide petals and sepals.
Jellyroll Morton - amazing rich, vibrant, saturated color, great plant too!
Southport - consistently sculpted cristate, fertile, good plant...everyone who sees it stops and asks about it.
Tuxedo Whiskers - a smaller flower with great color & pattern, dormant with 4 way branching.