To which court rulings are you referring?
The idea is, there are only two forms of citizenship, natural born and naturalized. There are no other categories or exceptions. Current US law and standing court decisions do not allow for this. By current and standing I mean no going back to superseded laws and court decisions and pretending they are still the law. No cherry picking bits and pieces out of Minor v. Happersett or Dred Scott v. Sandford as if they still apply today. Second, aside from left/right politics, the relationship between Federal law and the courts on citizenship is not perfect. There are conditions the law has not covered that are filled in by the courts.
For Ramaswamy and Harris, their parents were not here illegally, on short term visas, or long term resident aliens maintaining legal citizenship of their home countries. They were on the legal pathway to become naturalized US citizens when their children were born. That changes how they and their children are treated under the law and in the courts. What the USSC has stated. even if indirectly or inferred, is that children born under this circumstance are NBCs.