for datasets with custom platforms to show up as a new platform in UI, I just need to ingest a platform, ie urnlidataPlatform:custom, right?

I think the question is more around "li" in the urn name

urn:li

Does

li

represent LinkedIn here? Should companies be changing that namespace?

you could put up a #feature-requests to customize the namespace if it is a concern, i believe people have asked how to change it in the past but its not an easy change iirc

Yes ! You can ingest the DataPlatformInfo.pdl

thanks John!

I am not clear what you mean by ingesting the file. Can someone give baby steps on changing the namespace?