I actually went to school with some very unusual, one-off names, that I've never heard of before and since. Odd, since I grew up in a deeply middle class area. As well as lots of lovely under-used names, including two of the swans from Swan Lake.
Everyone always says there's far more diversity in names now, but I'm inclined to strongly disagree. There actually seems to be a relatively small pool of names that get used over and over these days. Olivia, Florence, Beatrice, Ruby, Daisy, Sophie, Grace, Millie et al, Isabella et al, Isla, Evie, Eva, Ava, etc, are all well and truly done.
The eyes-glaze-over names from my generation are probably Karen, Joanne, Angela, Andrea, Jennifer, Sarah, Claire, Lisa, Nicole/a, Jane, Bridget. All lovely names. But very, very, very familiar. Not as good with boys' names as I went to an all-girls' school. But Simon, Mark, Matthew, Andrew, Richard, etc, were all pretty standard.