What is it about names in our stories? Why do we subconsciously pick names that either start with the same letter or sound the same? The number of times I realise part way through that I've got two or more characters using names with the same letter. And I didn't even realise. I can only assume it's the 'sound' that appeals. Many of my heroines have names that end with 'y' or 'ie'. I know a lot of names do!! My kids have names that end that way but I don't, nor does my husband. Nicknames tend to end in 'y' or 'ie' so I wonder if we're becoming friendly with our characters when we pick names that sound like that.
Choosing the right name is of paramount importance to me. I can't even start to write until I have the MCs names clear in my head. I might change my mind about the names of other characters but never the MCs. I have a pile of jotters from my teens with hundreds of stories - mostly fan fiction - and at the front, before the title, I've named the heroine. So I can see it was important to me then. The names I used though - yuk - Harmony, Melody, Blondie - sense a pattern?
Now my favorite name is Kate. So much so that I've used it in three novels. (Katya in one) plus Polly, Daisy, Chloe. Ahh teh 'ie' sound again.
Guys names - tend to be American style - Josh, Ethan, Nathan, plus Will, Ed, Joe, Jack (twice) Not an 'ie' in sight. Maybe that's a girl thing?