This variation adds a second n to the more popular Finley, presumably to provide a more direct link to nickname Finn. Both spellings create a distinctly unisex name. However, while Finley is slightly more popular for girls, the Finnley spelling currently only ranks for boys.

This variation adds a second n to the more popular Finley, presumably to provide a more direct link to nickname Finn. Both spellings create a distinctly unisex name. The Finnley version, however, only just entered the US Top 1000 for boys in 2014, and it remains unranked for girls. Regardless, it seems that this name will only continue to rise in the years to come.