Zoe is one of those surprising names that has been on the Top 1000 nearly every year since 1880, but it's only since the turn of this century that it's ranked in the Top 100.

Zoey is a modern spelling variation of Zoe, the Greek Jewish translation of Eve. For a few years, it was even more popular than the original Zoe, but has now dropped back to the second-ranked spelling — not by much, however. In a recent year, Zoe ranked at #29 in the US, which Zoey featured at #59.

Sofia is a refined variation of the Greek name Sophia, which was derived directly from sophia, the Greek word for wisdom. It was the name of a Roman saint—the mother of Faith, Hope, and Charity—and queens of Russia and Spain.

Melodic and beautiful but with a touch of sass, Calliope is the name of the muse of epic poetry — and perhaps less glamorously, the musical instrument on the merry-go-round. Bold and creative, it debuted in the US Top 1000 in 2016, and in more recent year, IT appeared in the Top 500.

Also spelled as Kalliope — the more traditional Greek transliteration — Calliope means "beautiful voice", making this a musical and poetic choice. It was rarely heard in the US until the 2000s when Calliope "Callie" Torres from the show Grey's Anatomy helped introduce it to a wider audience.

Elena is at its most popular point ever in the US, thanks to its cross-cultural appeal and the overall popularity of El- names. It's more international than Ellen or Eleanor, but still accessible.

Helena is one of those classic names that just misses making the US Top 1000 girl names for its entire history, falling off for a single year in 1992. Since then it's been drifting lazily up the charts, and makes a perfect choice if you want a name that both fits in and stands out.

Magical and earthy, sophisticated but off-beat, Persephone appears as the daughter of Zeus by Demeter in Greek mythology. After she was kidnapped by Hades to be Queen of the Underworld, it was decreed by Zeus that she would spend six months of the year with her mother, allowing crops to grow, and six in mourning, thus accounting for the change of seasons. As such, she is both the goddess of the Underworld and of Spring.

Though it may not be as sweet and gentle as, say, Violet, the purple-hued Hyacinth still might hold some appeal for the parent seeking a truly unusual flower name.

Serene Irene, the name of the Greek goddess of peace and one of the most familiar Greek goddess names, was hugely popular in ancient Rome and again in the United States a hundred years ago.

Rue has gone from Golden Girls actress to Hunger Games heroine to a fresh alternative to beloved middle name Rose. This botanical name is also a coincidental double word name, meaning "regret" in English and "street" in French. Despite these unfortunate secondary meanings, Rue has real potential to be one of the most popular new middle names for girls.

Catherine is one of the oldest and most consistently well-used girls’ names, with endless variations and nicknames. The Catherine form feels more gently old-fashioned and feminine than the more popular K versions. Most stylish nickname for Catherine right now: Kate...or Cate, a la Blanchett.

Cassia is related to the cassia tree, which has yellow flowers and produces a spice that can be a substitute for cinnamon. Keziah, the name of Job’s daughter in the Old Testament, derives from the name of the plant as well. Cassia also has ties to the Ancient Roman name Cassius, an Ancient Roman family name meaning "hollow."

Katherine is one of the oldest, most diverse, and all-around best names: it's powerful, feminine, royal, saintly, classic, popular, and adaptable. Long one of the top girls' names starting with K, Katherine has now been unseated on the popularity list by upstarts Kennedy and Kinsley, but a dip in popularity only adds to its charm.

Anastasia is the feminine form on Anastasius, a Greek name derived from the word anastasis, meaning "resurrection." It was a common name among early Christians, who often gave it to daughters born around Christmas or Easter. There are handful of saints named Anastasia, including the patron saint of weavers.

Magical and distinctive but grounded and familiar too, it's no surprise that Athena has become one of the most widely used ancient goddess names in the contemporary Western world. Derived from the city name Athens, it is current a Top 100 choice in the US.

Helen is a name that has connoted beauty since ancient times – Helen of Troy was the the mythological "face that launched a thousand ships," over whom the ten-year Trojan War was fought.

In the 1930s, Dorothy left Kansas and landed in the Land of Oz; by the '80s she had become a Golden Girl, living in Miami with roommates Blanche and Rose, giving her a decidedly older image. But parents today seeking a quiet classic are bringing Dorothy back—she reentered the Top 1000 in 2011 after almost completely disappearing.

For a long time, Isadora has been overlooked in favor of Isabella, owing perhaps to its association with the tragic modern dancer, Isadora Duncan, or because parents would rather their daughter be a Bella than a Dora. Now, with Theodora back in the charts and vintage names in vogue, Isadora has been slowly gaining more attention over the last decade.

Sleek and serious, yet bright and energetic at the same time, Cynthia appears in classic mythology as an epithet for Artemis or Diana. While it is now a more neglected choice, it was once hugely popular in the middle of the 20th-century, peaking at #7 in the US, and in the Top 20 by diminutive Cindy.

In Greek mythology, Nyx was a powerful goddess and the embodiment of the night, giving this name a dark yet mystical feel. While some may associate too strongly with the word nix (meaning "nothing", "refuse" or "put an end to"), or to the make-up brand Nyx, it was nevertheless chosen for 64 girls (and 26 boys) in the US in a recent year.