Ask HN: Any tools to automatically diagram cloud infra?

Are there any tools that will automatically scan AWS, GCP, Azure and diagram what is deployed?

So far, I have found CloudCraft from Datadog, but this only supports AWS and its automatically diagraming is still in beta (AFAIK).

I am considering building something custom for this - but judging from the lack of tools that support multi-cloud, or only support manual diagraming, I wonder if I am missing some technical limitation that prevent such tools form being possible.