I'm always surprised how different some cultivars look when planted in different climate and how consistent some are, no matter where planted - I have not many W's but some of them are quite common:
Walter's Tango - new here, still potted, was looking for a Outrageous-like plant that flowers longer than 2 weeks
Watchyl Dancing Spider - a special favourite of my husband (he always chooses spiders when forced to choose a daylily)
Watchyl Lavender Blue - needs warm nights for perfect opening
Watermelon Summer VT - not registered late/very late from Olallie, good parent for lots of buds late in the season
Wee Willie Winkie - late/very late flowering miniature on high scapes, lots of tiny flowers
Whale Tales - shows often 'strange' flower form here - I'm not sure if I like that
When my Sweetheart Returns - reblooms but not every year
When Robins Sing - very early, reblooms but not every year
a closer look:
White Crinoline - very white tetraploid one, creped texture
compared with a petal of Gentle Shepherd
White Lemonade - small flowered near white
Who Do Voodoo - impressing colors, camera isn't able to catch them correctly
Wild and Wonderful - seems to be very popular, I really like it
Wild Horses - quite similar to Egyptian Queen, flowers a little later, has lower stems here
Wispy Rays - extremely impressing here in my garden, every visitor wants to buy it
Witch's Thimble - miniature with strong fragrance
Wild Wookie really is wild... sometimes polys, sometimes just does its own thing altogether (above). 
