Catherine is a very pretty name, but it appears that a large portion of the world agrees, because it's one of the most popular names for a woman in the Anglophone world. (Combined with the Katherine spelling, it might actually be more popular than Mary.) I also think Lorena is lovely.
I'm not feeling Delyth as much. I find it quite lispy, which is the same problem I have with Lilith. Carl is nms at all.
Of your Top 10 names, I like:
Julia
Elisabeth
Maude
Laura
&
John
Benedict
Francis
Nicholas
Please rate my personal short name lists (the latter includes combos):
www.behindthename.com/pnl/69381www.behindthename.com/pnl/69381/91835 (updated)
http://greens-end.myminicity.com/env