This are very severe rules. They are affecting our company in a large scale.We sell apps to cities and administrative entities/services. All apps are different, they have different identity, but share the same base code, as the main features are the same (communication layer, data models) changing only CSS and HTML in some cases.
We use Ionic to build our apps with some custom build scripts.
What Apple told us is they are targeting not only UI similarities, but also the source code and frameworks. Probably more than 70% of our apps have exactly the same source code (cordova, cordova plugins, ui framworks) and in some way this is stopping the apps to get approved.
I don’t have a written response, but this was told me by and oficial AppStore Reviewer on the phone.