We have Olivia, Charles and Alexandra.

All get shortened to Livvy, Charlie and Lexie.

I'll be honest, I have no idea if they "match" at all, but though common usage the names all "go togeher" OK?

I am one of 5 kids: William, Charlie, Claire, Lucy & Tom. Now I really have no idea if these "match" or not, but because it was what I grew up with, in my head they all "go together" IYKWIM?

So I reckon whatever you chose, sibings names WILL go together through use?