Fairly popular a hundred years ago but out of the US charts since 1978, the quirky yet edgy Roscoe feels very much in step with the trending o-ending boy names popular now, such as Milo, Hugo, and Otto. A Top 1000 choice in the UK (albeit near the latter end), it could make a cool alternative to Ross, Russell, Robert, and Ronan.

Ellis is a former Old Man Name turned gender-neutral choice for the 21st century. It's one of the less used names in the currently popular El-family, unless you're in the UK, where it's a Top 100 choice.

Perhaps the ultimate nicknamey name, Ziggy manages to sound cool, cutesy, spiky, and energetic all at once. It brings to mind the glam-rock of Bowie's Ziggy Stardust and the cool vibes of reggae musician Ziggy Marley, along with the contemporary-but-vintage appeal of Teddy, Mack, and Albie.

With a touch of celestial power, a hint of clunky charm, and the totally cool -o ending, Cosmo may well be finally shaking itself free of both the Seinfeld association (which made it a punchline of a joke) and the cartoon fairy association from The Fairly OddParents. In fact, it is in the Top 1000 in the UK and a favorite on Nameberry.

Percy is an adorable old name that is finally shedding its pampered Little Lord Fauntleroy image in this new era of boys with soft yet traditionally male names like Jasper and Elijah. Originating as an aristocratic Norman name, Percy became fairly widespread in England--and to some extent in the US--as an offshoot of the fame of the poet Percy Bysshe Shelley.

Magical and powerful, but gentle and approachable too, Emrys is a Welsh name which may be worth considering if you're looking for something less common that Dylan, Evan, or Morgan. An offbeat epithet of the wise wizard Merlin, it's currently in the Welsh top 100 and in the England and Wales Top 500 over all.

Jaunty and dapper, Rafferty is one of the most engaging of the Irish surnames, used by Jude Law and Sadie Frost for their son in 1996. Derived from the Irish, O'Raighbheartaigh, it means "(spring) flood tide", though some sources relate it to the Old Irish rath meaning "abundance" and "prosperity."

Chosen for their daughter by Bruce and Demi (inspired by the To Kill a Mockingbirdcharacter), and for her son by Tai Babilonia, an interesting choice for either sex, with overtones of a "good scout" and the upstanding qualities of a Boy/Girl Scout.

In the past, Orson has felt like a one-person moniker, tied to film director Orson Welles, who dropped his given name of George in favor of his more distinctive middle. While the Citizen Kane creator seemed to own the name during his lifetime, it's now an interesting possibility for any parent seeking an unusual yet solid name. It's started to appear to the celeb set too -- both Paz Vega and Lauren Ambrose have little Orsons.

Monty, a name with a World War II feel, is rarely used on its own in the US. But we're hearing rumblings of a comeback and think that Monty, whatever it's short for, is an adorable vintage nickname name of the future. It's already a hit in the UK.

The popular single-named alternative singer (born Bek) has given this cool nature-meets-surname name a new lease of life. Another notable bearer is Beck Weathers, a Texan pathologist who survived the 1996 Mount Everest disaster, which was covered in the book and film Into Thin Air.

Ansel, primarily associated with the great western photographer Ansel Adams, famed for his magnificent photographs of the Yosemite Valley, could make a creative artist-hero choice. For Adams it was a family name – he was named after his uncle, Ansel Easton. And, in turn, Adams was the namesake of young heartthrob Ansel Elgort, son of a photographer.

The ultimate Jane Austen hero name, Darcy makes a handsome, surname style choice. Predominantly used for girls in England and Wales, across the pond in Australia, it is a stylish Top 100 name for boys. In the US meanwhile, it does lean feminine, however, 30 boys were given the name in a recent year, suggesting it is on the up across the board.

Dashiell, though missing from many other name sources, is among the hottest new names, chosen by such celebs as Cate Blanchett and author Helen (Bridget Jones) Fielding. With its great dash and panache, Dashiell is associated with detective writer Dashiell Hammett (born Samuel, as in Sam Spade, Dashiell being his mother's maiden name). Alice Cooper was ahead of the game: He named his son Dashiell in 1985.

Booker would make for a very cool name, for writers, reformers, R & B fans and those wanting to pay tribute to Booker T. Washington.

Any number of Fitz names -- Fitzgerald, Fitzpatrick, Fitzroy, Fitzwilliam -- have been used as Christian names, in fact Fitzwilliam was the given name of the dashing Mr. Darcy in Pride and Prejudice. Fitz can be a short form of any of them and is often, like Mac, a nickname drawn from a surname.

Baseball commissioner Bowie Kuhn put this name in play as a first name, but David Bowie (born with the considerably less marketable moniker of David Robert Jones) gave it charisma. He changed his surname in 1965 to avoid confusion with the then popular Davy Jones of The Monkees, borrowing it from the American hero of Alamo, Jim Bowie.

The energetic Russian nickname name Sasha is being used increasingly on its own, though since the prominence of the First Daughter, more than 90% of the American babies named Sasha are girls. Sacha Baron Cohen bears one of the alternate spellings.

Indigo is one of the most appealing and evocative of the new generation of color names. Color names have joined flower and jewel names -- in a big way -- and Indigo, a deep blue-purple dye from plants native to India, is particularly striking for both girls and boys. Although most people don't think of it like this, Indigo might also be considered among the most stylish Greek baby names in use today. Some cultural references: The Indigo Girls are a folk duo, 'Mood Indigo' is a classic Duke Ellington jazz composition, and there is a 1970's New Age theory that Indigo children possess special, sometimes supernatural abilities. Indigo is the name of a character in the Ntozake Shange novel Sassafrass, Cypress & Indigo, and was used for his daughter by Lou Diamond Phillips.

Haunting biblical and Civil War place-name; now unisex—especially after the mega-high-profile Brangelina couple picked it for their daughter. It debuted in the Top 1000 for boys in 2015.