i'm guessing it's for the little puppy in your avatar? the thing is, those are all - and this is just my opinion - very grandiose names. they're fine if the dog grows up with a Coco Chanel attitude (and "Coco" is a great name for a dog!) but if she's more like:
then those names would be completely disastrous, lol.
i'm a firm believer in the animal choosing their own name. in dandy's case, i named him "dent de lion" bec he was such a nippy little bugger. but as he grew, "dandy" was perfect - he's got the "puttin' on the ritz" attitude and he wears a tuxedo and on top of it all, he is convinced he's all that and a bag of the finest well-aged gourmet cow poop!
[btw: "nyx" is a name i'd only give a black dog, being as she's the goddess of night]
We chose Holly's name before we got her.
My mum and sister initially wanted to call her "Daisy" but I said "No" I couldn't have a dog with that name and my first pets were two mice called Badger and Daisy who I got when I was 5, they had just forgotten. So they had to try again (during the name choosing I was still against getting another dog so I refused to offer any suggestions but I couldn't let them pick a silly name either). They wanted a floral name and it was at christmas so "Holly" was the next suggestion that I found acceptable.
Turns out it's a good name for Holly because she sure does have thorns

If we had gone with Holly's behaviour to pick her name she would have been "Rat-shark" as that was her nickname as a puppy because she was small and very shark-like in behaviour (ie nippy)
Lewis was called "Mr.Pom" when we got him in December as a 3 year old. Me and mum chose his new name before we even met him or knew for sure that we would get him. I don't think he knew his old name very well because within a few days he was responding to "Lewis" and never responded to "Mr. Pom" for us. "Lewis" suits him.
Our old dog was called Paris. I chose the name weeks before we went to get her or even met her and she certainly grew up to be a "Paris", she acted very much the way you would imagine a person called "Paris" would.
... I have lot's more examples....
Maybe we've been lucky but all our pets have suited their names even if we named them before we met/saw them. I think they grow into their names just like people do. I mean how many new born babies do you see who you think need the name "Frank" or "Nigel" (or I'm sure you can think of other names that sound slightly odd when applied to e new born baby) but some baby's are given those names or there would be no adults with those names.
So I would say go with the name you like and if the dog really doesn't suit it then some nickname will probably evolve as it grows.