Aaron is a name of subtle contrasts: an unusual spelling that is easily recognizable; a solid Biblical choice that doesn’t feel exclusively tied to religion; a well-established name for boys but sometimes confused with the girls’ name, Erin; used internationally but with notably different pronunciations; classic like Andrew but not out of place with recent favorites like Weston or Jayden.

Biblical Jacob ceded his Number 1 spot to biblical Noah, in 2013, after holding first place on the list of baby boy names from 1999 to 2012, given a huge boost by the Twilight phenomenon.

Patrick, long tied to a hyper-Irish image, is enjoying something of a renaissance as a stylish classic, as it has long been considered in England. Along with such choices as Charles and George, Patrick has escaped overuse in recent decades.

Blake -- an early unisex option -- dropped out of the Top 100 in 2017 for the first time since 1988, but remains a sophisticated choice. And yes, both conflicting meanings of Blake are accurate. It originated as a surname in England derived from a nickname. Much of its masculine image was influenced by the wealthy, silver-haired character Blake Carrington in the massively popular 80s TV series Dynasty. Rosie O'Donnell has a son named Blake.

Stephen, also spelled Steven, is a strong and likable classic, with the he's-a-great-guy short form Steve. Though not as well-used or fashionable as it was in its heyday -- it was a Top 25 name from 1946 to 1957 -- it's still a widely used name. It remains an even more popular in Ireland.

Eric is derived from the Old Norse name Eiríkr, from the components ei, meaning "ever," and ríkr, "rule." It was adopted by English speakers in the mid-nineteenth century, who were already familiar with the exploits of the tenth century Viking navigator and discoverer of Greenland, Eric the Red. Erik is an alternate spelling and the preferred form of the name across much of Europe.

Paul is an ancient name for boys -- popular in Roman and medieval times -- that's not very fashionable now, which can work in its favor, scarcity balancing simplicity.

Mark has the rare appeal of a strong, sleek name with a minimalist modern feel and ancient roots. The name Mark is taken from the Roman god of war Mars, also the namesake of the planet.

Charles derives from the Germanic name Karl, meaning "man" or "free man", and is a royal name in multiple European countries. A famous early bearer is Charlemagne, King of the Franks and Lombards and then Roman Emperor in the 8th-9th centuries.

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

Jason, the Number 3 name for the entire decade of the 1970s -- thus the title of our original baby-naming book, Beyond Jennifer & Jason -- is more likely to be dad's name now than baby's, but it's still a widely used name.

Bobby is the quintessential mid-century nickname, the name of the son on Mad Men and overused to the point of cliche. Though Robert is still a highly popular choice, most Roberts today are called by their full name or Rob or Robbie rather than Bob or Bobby.

Garrett, also spelled with one 't', is an Irish-inflected name that was in the Top 100 in the nineties, but has now slipped in popularity.

The presidential Tyler rocketed up popularity charts in the late 1980s and early 1990s (it ranked Number 9 for that entire decade), along with cousin Taylor, becoming almost pandemic across the land-- and to make matters more confusing, both (especially Taylor) have been used for girls as well.

Jordan became one of the top unisex baby names in the heyday of basketball's Michael Jordan, and is still among the most popular unisex names starting with J. The name was originally given to those baptized in holy water brought back by Crusaders from the River Jordan, the only river in Palestine, and the one in which Christ was baptized by John the Baptist.

Colton is a trendy two-syllable choice, with the popular 'on/en' ending.

The independent Alex has become a classic in its own right. One of the truest unisex names, Alex is used almost equally for both sexes. Alex is used both on its own and as a short form of formal names of both genders, such as Alexander, Alexandra, and Alexis.

Taylor was much more popular throughout the 1990s for both genders than it is today. Close to the Top 50 boys' names in the mid-1990s, Taylor recently fell out of the Top 500 for boys and out of the Top 100 for girls, and is predicted to continue on a downward trajectory for both genders. Similar but more stylish baby names today include Sawyer, Sayer and Thayer.

A popular name in Denmark, in this country Bo has some cowboy swagger and a lot of substance in its minimal two letters. In Mandarin Chinese, Bo means "wave".

No longer tied to the hapless Ace Ventura, this jaunty, high-flying nickname name is starting to take flight among celebrity and other parents, with its countless positive references to doing well in tests and poker games, on the tennis court and golf course, and in the air.