My dd has a common name, or at least it should be common as it's a top 10 name. However, we've never personally met another child with the same name as her in the past 7 years, and there is only 1 other child in her school of 400+ kids with the same name as her.
My ds has a very uncommon name yet we have met another child with the same name as him 🤷🏻♀️