I'm not big on giving away too much personal info on line, but my girls' names don't match. Not at all.
Now my brother's and my names both start with J and sound good together... he's not my twin, though. My son's name starts with T and I had a girl name (T) all picked out for if I had a girl that sounded good with his name - but then I didn't use it because I would either have 1 odd kid or have to come up with a 3rd T name - and then if we had another I'd be in the same position - and I really didn't want to be "that family with all the T names." Two kids with similar names = OK but more than that and it's getting weird in my book, LOL
All that said - mu son has a very unusual name and my girls have more common names and I grappled with, should they all have weird names?? But I didn't want to be that family with the kids with the weird names, either, so... no. My family was stunned at how normal the girls' names are, LOL