Michael was the Number 1 American boys' name for almost half a century. While Michael has moved out of the Top 10 baby boy names, it's still widely used.

Ryan’s use as a given name was inspired by the surname Ryan, a variation of the Irish O’Riain meaning "son of Rían." Rían is composed of the Irish-Gaelic elements rí, meaning "king" and an, a diminutive suffix. Ryan is considered a unisex name in the US, where variant spellings Ryann and Ryanne are also valid for girls.

Christopher derived from the Greek Christophoros, which is composed of the elements Christos, referring to Christ, and phero, meaning "to bear."

When Jennifer finally gave up her Number 1 place on the girls' popularity list, her crown was passed to Jessica, who reigned for not one but two decades. Jessica was the Number 1 name in both the mid-1980s and 1990s, never sounding quite as trendy as its predecessor, maybe because of its classic Shakespearean pedigree.

Natasha, an appealing, still unusual name, entered the American mainstream post-Cold War but seems to have peaked in the eighties, replaced by the more straightforward Natalie. As is common for Natashas the world over, the Obamas shorten their Natasha's name to Sasha.

Stephanie is the feminine form of Stephen, derived from the Greek name Stephanos, associated with crowns and garlands It's been the name of several royal women throughout history, including the medieval Stephanie, Queen of Navarre, and Princess Stéphanie of Monaco, the daughter of Grace Kelly and Prince Rainier of Monaco. International variations of Stephanie include the German Stefanie, Italian Stefania, and Spanish Estefanía.

Though perhaps not as currently stylish as Ruby, Jade, or Pearl, Amber has a colorful history (remember the notorious Forever Amber heroine?). Unfortunately, it does come with the "Amber Alert" connotation for modern parents (and their children).

Early 1980s sitcom (Family Ties) name that has been well used ever since, with an upbeat three-syllable sound and a slightly tomboyish edge.

Friendly mega-popular short form of Katherine that has definitively replaced Kathy, Katie is often given on its own. Going forward, though, Katie is more stylishly clipped itself to the grownup Kate.

Sable is often associated with the Dynsaty soap opera, but it is actually a type of animal historically hunted for its fur. Sable is also used as a word for a warm, rich black color. Both associations carry hints of luxury.

Dane is a more masculine Dana alternative, with added style edge. Dane has been on the US Top 1000 for more than seventy years, having entered the list in 1945.

The straightforward Erica is a Norse feminization that was long associated with the complex, mega-popular character Erica Kane, played by Susan Lucci for decades on the soap opera All My Children. Used in Scandinavia since the early eighteenth century, where it was usually spelled Erika, it was in the Top 50 girls' list in the USA in the 1970s and eighties.

The one-named singer clarified the confusing pronunciation on this one (in her case, it's shah-DAY), but a number of parents have looked for more phonetic spellings. The Finnish version means "rain."

One of the original unisex Irish surname names, energetic Casey bounced onto the scene in the 1960s, then peaked in the 1980s for both boys and girls. Today Casey is having a resurgence for both girls and boys and re-entered the charts on the girls' side, likely due to the character Kayce Dutton (pronounced like Casey) on the hit show Yellowstone.

Not to be confused with shea butter, this name is a common surname in Ireland, combining spirit, substance, and gentleness. The traditional Irish form is Séaghdha (SHEH), though it could also be used as a short form of Séamus, connecting it to James.

One of the most familiar — if not stereotypical — Gallic names. Pierre was a Top 5 name in France from the 19th century through 1940 and is now on a steady decline in its native land. In the US, Pierre was most common in the 1980s but it has never cracked the Top 300.

A lacy, lucky name very popular in the Hispanic community a decade ago, less so now.

Football great Brett Favre single-handedly kept this name in the limelight, though it continues to sink in popularity.

Sharp and spiky with international potential, as a feminine name, Nikita has its roots in Hindi, Marathi, and ultimately Sanskrit. It comes from niketa, meaning "home, habitation", and may also be spelled as Nikitha.

This ultrapopular boys' name is rapidly becoming a hot name for girls; admired for its buoyant Irish spirit.