A sibling for James

I currently have one son named [name]James[/name] [name]Walter[/name]. I am not pregnant again yet but have been thinking about names lately. I was curious… What would you name a sibling to [name]James[/name] [name]Walter[/name]? To give you a better sense of my taste in names, some of my favorites are [name]Theo[/name], [name]Oscar[/name], [name]Grover[/name], and [name]Harry[/name]. I’m looking for girls’ names as well but haven’t been able to find one I love yet. I can’t wait to hear your suggestions. Thanks!