What are some names to go with this boys name?

So, I found out of Friday that my brother and his girlfriend will be having another kid. They already have a son Jayden Raine, who is one & a half. What names do you think go well with Jayden. They aren't sure if its a boy or a girl as she is only 12 weeks pregnant. Any ideas would be appreciated. Hopefully I can persuade them out of the more popular names haha Thanks!!