Atlas is one of those names that was previously thought too powerful for a baby boy, who would have to be strong enough to carry the world on his shoulders. Now Atlas has joined the pantheon of Greek and Roman god and goddess names in the realm of possibility, along with Mars, Zeus and Apollo.

River shares the tranquil feeling of all the water names, and seems to have pretty much escaped its past strong association with River Phoenix and his unfortunate fate. Actor Joaquin Phoenix named his son with actress Rooney Mara after his brother River.

The girls have Violet and Scarlet and Ruby and Rose, but for the boys there's a much more limited palette of color names. Grey/Gray is one exception, which could make for a soft and evocative—if slightly somber—choice, especially in the middle. Kaitlin Olson and Rob McElhenney named their son Leo Grey.

Ash has Southern charm plus the arboreal-nature appeal. Plus your little boy will prize Ash as the name of the hero of the Pokemon cartoons. Ash can also be a dashing short form of Asher, Ashton, or any other "Ash" name.

Mars is a name with interesting potential, ticking the boxes as a mythological name, a space name, and a single syllable choice ending in -s. For parents wanting something unexpected, Mars could work as an alternative to popular Brooks, Max, Atlas, or Miles - and given to around 124 boys - and 27 girls - in a recent year, it is unusual but recognisable.

Among a small shower of rain-related names, this pure version can have a cool, refreshing image.

This body of water runs deep; the best of a group of new possibilities that includes Bay, Ocean, River, and the more established Brook. It has received attention via the actress Lake Bell. Lake would make a particularly cool and refreshing middle name, as Gisele Bundchen and Tom Brady did for daughter Vivian.

Blue suddenly came into the spotlight, as the unusual color name chosen by Beyonce and Jay-Z for their baby girl Blue Ivy. Blue is also a starbaby middle name du jour, used for both sexes in different spellings and forms, from John Travolta and Kelly Preston's Ella Bleu to Alicia Silverstone's Bear Blu. Dave 'The Edge' Evans named his daughter Blue Angel back in 1989.

Tyde is a rare masculine name with oceanic associations, evoking images of the rising and falling of sea levels. This short, powerful name likely derives from the English word 'tide,' representing the natural rhythm of water and suggesting qualities of strength, constancy, and natural force. Though uncommon throughout recorded naming history, Tyde fits with contemporary trends toward brief, nature-inspired names with strong sounds. Its similarity to common names like Tyler or Ty makes it accessible while remaining distinctive. The name may appeal to parents with connections to coastal regions or those seeking a name symbolizing natural power and resilience. Its rarity gives bearers a unique identity with meaningful natural symbolism.