Boy/Girl names that go with sons name.. Helpp

Okay so I found out I’m pregnant with my second!❤️

I’m having a hard time finding a name that would flow nice with my sons name. His first name isn’t a very common name I think.

{ Aeson Matthew }

The middle name is my husbands middle name as well. My husbands name is Ryan Matthew and mine is Nancy Elizabeth.

Can any of you ladies give me ideas? I know it’s hard and that’s why i myself am having trouble finding a girl and boy name 😪