My middle name is on this thread 3x, although one person said it's not as bad as other names. And my first name - which I don't particularly love - is here once, on a list that also includes some of my favourite names.
Ian is odd to me because it's an anglicisation of Iain and while I know it has a history of use in Scotland, I've never met anyone with the given name Ian, although I've encountered it a lot lately as a unisex/masc short name for girls with names that have -ian- in them. I'm always confused about the anglicisation of Gaelic and Irish names - e.g., why Iain and Seán instead of John and Mairi and Máire instead of Mary and Eilidh instead of Helen/Ellen, but still far more James and Jamie than Hamish/Seamus and Angus and Innes than Aonghas/Aonghus?
Niamh and Neve aren't the same name.
Some European languages, for example Polish, don't have a concept of a soft initial C, so many names that start with C in English have to have an initial K (Karolina, Klara, Konrad, etc.) There are some names with an initial C, like Cecylia or Celina, but only if C is pronounced as S.