Mercer is an attractive possibility which is an occupational name that doesn't sound like one. Mercer and its cool, sophisticated short form Merce project a super creative image via their artistic namesakes.

Kanan is multicultural name with a number of different origins, making it a versatile choice that travels well. A Top 50 choice in Azerbaijan, Kanan also made a brief appearance in the US Top 1000 in 2022. Given to around 200 boys each year, it feels familiar and rare at the same time.

Mercer is one fashionable occupational name that can work as well for girls as boys, perhaps because of the soft c or the conventionally feminine nickname Mercy.

Merce Cunningham (born with the French version Mercier) was a highly influential avant garde dancer-choreographer and his name still resonates with an aura of bold originality.  

Other occupational names would be more commonly accepted, though the Mad Men character has certainly brought it to the fore.

Chapman is derived from céapmann, an Old English occupational name for a merchant or marketman. The slang word "chap" came from chapman — which was also used as a term for a customer in 17th and 18th century England.

Merce feels masculine because of its associate with (male) dancer and choreographer Merce Cunningham, but it could also be short for Mercy -- which in the end would be a much better choice for a little girl.