What is the best way to write test cases in nightwatch for white labeled websites?

Hey guys, I am working on an existing nightwatch repo and I have to add new test cases for new components in the website. The thing is that it must run on all the other white labeled websites also, so the previous team who worked on it wrote everything by putting them on one testcase and ran a for loop so it can also check for other websites in one go.

This approach does not feel right. Is there any better way for doing it.

By the way, I have to use nightwatch itself.