I always thought that the UK and the US popularity charts looked pretty similar. I talked to my US friends as if the same names were popular in the same decades. But when I took a closer look at the charts, I was amazed at how many names differed.
Names that were in the UK but not US popularity charts in 1880
Names that were in the UK but not US popularity charts in 1890
Names that were in the US but not UK popularity charts in 1880
Names that were in the US but not UK popularity charts in 1890
On the whole, the US names were shorter and had many more nicknames. The boys' names included names ending in -d and -er. The UK names were longer and more ended in consonants. It was interesting to see the amount of Biblical names in the 'only UK' list. This seems to have switched round now with many Biblical names in the US popularity list.