I don't like people using surnames as if they were first names- Taylor, Madison, Elliot etc.
I don't like made-up names either- Jayden etc.
Nor place names- Chelsea, Jordan etc. Paris is ok as is has classical connotations, but the day I meet a Birmingham will be both very sad and very funny!
I don't like a lot of the names people of a certain class chose for my generation either- Kelly, Kayleigh, Hayley. Nor the ones of a generation before that- Sharon, Jean, Joanne, Sheila.
And then there are some perfectly ordinary names I just don't like- Emma, Peter, Richard, Robert, David, Sarah.
I also can't stand the habit of naming a child an abbreviation of a proper name- Charlie, Alfie, Danny,.. why not give them the full name and just use the abbreviation as their nickname?
Cute names are also appalling. People should think very carefully before using some flowers as girl's names- Poppy, Daisy. They sound like cows, and you expect the next one to be Buttercup! How can you respect an adult called Daisy?
As a teacher too there are names you would never use because you have never encountered a good one, or a nice one- Kieran, Jack, Evan, Holly. But I've never met a nasty Jonathan.