Sean, after a long reign as one of the top Irish boys' names in the US, has now slipped as parents look to fresher Irish choices such as Liam and Aidan. In Ireland, Sean is still highly popular, but variation Senan, an Anglicized spelling of diminutive Seanan, is also stylish in Ireland. While Sean is the Irish form of John, Seanan and Senan may be thought of either as Sean diminutives or relatives of the Latin word "senator".

Kyle is still appreciated by thousands of parents each year for its combination of simplicity, strength, and style; it was in the Top 20 for most of the nineties. As a Scottish surname, it dates back to the fifteenth century.

This simplified version is not nearly as popular as the original (it also destroys a perfectly good palindrome), and has been on the decline in recent years.

Kate, in the headlines via Catherine Middleton aka the Princess of Wales, has been as pervasive as Kathy was in the 1950s and 1960s, both as a nickname for Katherine and Kaitlyn and as a strong, classic stand-alone name.

The Dorians were an ancient Greek tribe, one of the three major pre-Spartan tribes. It literally means "of Doris," a Greek district, or "of Doros," referring to the son of Helen of Sparta. Dorian derives from the Greek doron, meaning "gift," along with related names such as Dorothy and Dora.

Along with Daniela, Michelle, Nicole, and Denise, Danielle was a big hit from the 1960s to the nineties, sitting comfortably in the Top 20 for several years. Parents then responded to its chic, sophisticated Gallic image, and though it has lost some of its sheen, it's still a widely used choice.

A diminutive of Daniel that's been immortalized in odes ranging from 'Danny Boy' to 'Danny's Song.'

The quintessentially elegant and worldly Gabrielle -- designer Coco Chanel's real name -- is on its descent after years on the rise.

Chris is a long-running nickname used almost equally for boys and girls. While past its prime, Chris stands out as sounding completely appropriate for both sexes, perhaps because of its widespread use as a short form of both the popular Christopher and Christine. Chris manages to retain its crisp appeal even though its fashion moment is over.

Sam has long been used on its own for boys, as accepted standing by itself as it is as a short form of Samuel. Straightforward and down-to-earth, Sam is the name of the son of the co-stars of The Americans, Keri Russell and Matthew Rhys. Sam is one of the most popular names that start with S in the Western world, ranking higher in several European countries than it does in the US, where it's trended downward since the 19th century, though it's always been in the Top 1000.

Cindy as a name in its own right made it into the Top 20 in 1957 and remained a Top 200 girls' name until the end of the 20th century. Although it's fallen precipitously since then and left the Top 1000 completely in 2015, Cindy remains a name commonly heard in the US. Today, though, it would more likely be attached to moms or grandmas than to babies.

A Scottish place and surname that was once adrogynous but now leans about 20 to 1 toward the girls' side, Leslie has a pleasant, heathery feel that kept it in or near the Top 100 for several decades; the Lesly and Lesley spellings are also frequently used, especially in Britain. While Leslie may not be the freshest name in the bunch, it's become a modern classic and is one of the surprising names always to have ranked among the US Top 1000 for girls.

A name that has a bit of a shouldn't-I-be-a-middle-name sound, though still in use as a first for both genders. Lee might be a good choice if you want something that sounds at once traditional yet modern, unisex but not newly-minted.

Tony, as in classy. Or To-nyyy, as yelled out a tenement window.

Alberto is the Italian, Spanish and Portuguese variation of Albert and lends a more unusual and fashionable edge to this name which is still a grandpa name to many.

Teddy is in some ways one of those midcentury boys' nicknames -- like Jimmy or Bobby or Billy -- yet because it was never that popular, it feels timeless too. The preferred short form of Theodore these days may be Theo and of Edward may be....Edward, but Teddy can work adorably for either and grows up to Ted. And of course, let's not forget the inevitable teddy bear.

Karen, a once sweet Danish import, was so popular during the baby boom (Karen was Number 3 in 1960) that it's become a mem in recent years, representing a hostile white woman—one who usually wants to speak with the manager.

Popular in the US from the 1920s to the 1950s, Arlene is of uncertain origin and seems to be a modern innovation, perhaps based on names like Marlene and Darlene which were popular around the same time. Nowadays, the -lene names are mostly outdated, although the recent rise of retro Arlette could make Arlene seem plausible again as well.

First-wave Irish name and place name—the poetic name for Ireland—now supplanted by newer alternatives such as Maeve and Delaney.

Made famous in fifties movies as a wholesome backwoods gal, Tammy was a Top 10 choice from the mid-60s to early-70s, but is now given to fewer than 100 babies per year in the US.