Hello.
Personally, among the names you choose, Yu Yue for boys and Yu Jie for girls are better.
Yu Yue: The pronunciation is similar to joy, and it also means happiness.
Yu Jie: It is easy to pronounce and more noble.
The other name was chosen by me.
Boy Yu Guan: Look at the world and look at the little things around you
Girl Yu Ke: Ke is the name of jade, symbolizing purity.
Thank you. If you need anything else, please ask.