Xander --
Like this
Xavier
Xerxes Zerk-Cees
but don't know if it's usable. I would put it in the middle lane
Yannis but noooooo Yanni nickname! ---
I actualluy like Yanni 
Yves --
Like
Yates --
It's okay
Yorrick --
Dislike the sound
Yuri --
Like but too close to urine
Zander --
Like
Zaid --
Dislike
Zaddeck Z-ADD-ICK --
Dislike. Sounds like a name from Star Trek
Zared --
Hmm Okay
Zarek --
See Zaddeck
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Xenos
Xanthus
Yancy
Yanai
Yale