We have developed a next.js ecommerce website with a graphql schema from an ecommerce platform (Magento). Now we would like to extend this website with another brand.
This brand will be connected to a different Magento instance with graphql schema differences on top of default Magento schema.
Also theme and some components behavior could be different. We should be able to extend components for each brand.

We want to avoid a separate code base for each brand. Any advice on how to set this up?