Boys:
Samuel
Oscar
Angus
Joshua
Jack
Harry

Out of all those I only like Joshua but it s not very different,
How about

Duncan
Brad
Levi
Luca
Marc
Drew

Girls:
Amelia
Lila
Evelyn
Cate
Jade
Audrey
Sierra

Sierra is nice, how about Scarlet, Sapphire, Allana,