Yeah they do... in N. Am'n En. anyway, they sound close... all you do is add a sis to the end... Doesn't mean it wouldn't otherwise be pretty... just that for the medically aware, our first thought when we hear it is liver disease.
Amelia makes me think of
Amelia Bidelia though and is therefore not even on my radar...
Just plain not a fan of
Addison...
If going solely on sound with no other associations, I think
Soraya would sound the nicest of the 3...
I'm not a big fan of most Mc names as given names either.