How do I configure US layout with German special characters (on Fedora/GNOME/wayland)?

On a Fedora system running GNOME under Wayland, I want to accomplish the following: - regular US ANSI layout - international keys / unicode keys on Right Alt+key (I really only need the German ones and maybe the Euro symbol) - no dead keys This is one of the layouts available on KDE and it's perfect for anyone with a US keyboard who needs european characters and wants to do coding. But there is no such layout on GNOME. Does anyone know how I can configure it?