Get Boards and Documents from Delve using API

Question

Hello,

I have requirement to fetch the Boards and Documents from Delve based on user logged in. I have tried using Ms Graph insights api also but as they are in beta version, I could not get result.

Delve fetches the documents from OneDrive and SharePoint, but also it analyse the signals and then gives the result that is most relevant to me.

I also need same thing.