This is funny. I would hardly call any of the names I've read, with 3-4 exceptions, unique. Some you hear more than others and some are down right trendy/common. But what you hear will vary from area to area--and how much exposure you have to names (I have a lot).
When we named our oldest, it was an old name you didn't hear often--not unique, but not something you'd likely run across a lot. Well, opps; it became very trendy and gender neutral just as I named him. I still love the name though.
DS#1 named DS#2, and that one is different. We've met two people who have heard it used before (a teacher at his preschool has a son with that name, 20 years older & my sister has a friend of friend with the name 40 years older). I guess it is a once every 20 years name.
Of course, a friend of a friend saw our birth announcement when DS#2 was born, and decided to use it.
With DS#3, it is a steadily growing name, but I loved it. I figured it might be the last chance I have to use it--#4 might be a girl--so to heck with everything. I rejected it for its emerging popularity with DS#2, but it's a perfect fit for DS#3 and I have no regrets even though he'll probably have others with that name in his class.
As far as unique spellings of names go...In the USA, you can't "misspell" a name. We don't have those naming rules so many countries have. Many different countries have a version of the same name either spelled slightly different or pronounced differently anyhow, so how can you say one version is "right" and the other "wrong"? Now, I wouldn't get
too unique with any spelling--you should be able to tell what it is just by reading. But interchanging a C and a K is hardly difficult, ie Eri
c/Eri
k, or switching an A/E/O, ie P
ayton/P
eyton or Keat
on/Keat
en. And, of course, names evolve.
Which is my next point. Many "girl" names started out as boy names. Shannon, Jamie, Carol, Kerry, Courtney, Robin, Marion, Morgan, Avery, Payton, Addison, Ashley, Blair, and oh, how I could go on and on and on. Names are boy names, then gender neutral names, then girl names. Or, they are always girl names. It's been that way with most things since the beginning of time. Afterall, pink used to be a masculine color. But, in Celtic (???) times, in order to fool evil spirits mothers would dress their boys in blue (a feminine color) and poof!, blue is for boys. OK, the poof! was probably a century, but still...
All rightly now, I'm off my soapbox.
Boy names I like (although I refuse to publicly post MY boys' names or ones I'm saving for possibly the next one):
Ryland
Keaton
Wyatt
Sterling
Barrett
Easton
Graeme
Bennett
Rhys
Grant
Alden
have used it...not to mention that my son actually has another in his class! Never ever thought that would happen - but the other kid is spelled Jaedon. 
I even found a mug in Myrtle Beach with his name on it, spelled right and everything!! He will be so thrilled (it's going to go in his stocking) because he's never seen anything with his name imprinted. LOL
