ooh where to start!
I have an irrational dislike of Chloe, Lucy and Emily (the latter two are far too girly for me and although are classic are a bit yawn! sorry). I'm also not keen on the names often given by middle class yummy mummy types (Olivia, Isabelle, Amelia etc) sorry!
Don't like names ending in "een" or "ette".
Not keen on prim/pretentious names e.g. Prudence, Constance, Mabel that remind me of a victorian with buttons done up to her chin.
Don't like most of the 70s names I grew up with especially Michelle, Tracy, Sharon, Joanne (love Joanna though), Donna, Suzanne (again, love Suzannah), Elaine etc. Other names associated with this period I absolutely love though e.g. Joni and Zoe (although Zoe is an ancient Greek name - has actually been around for thousands of years and is a saint's name - so absolutely classic IMO).
Don't like current faddy names - Evie, Lily, Lola etc.
Don't like some names that make you wonder if the child has a foreign connection when they don't e.g. Amelie, Sylvie etc. There are some exceptions to this though.
So as you can see I'm a fussy bugger!! And am sure most of the people with these names are absolutely lovely.