This is not a MS project, but this thing called Hot Chocolate here (https://github.com/ChilliCream/hotchocolate) is very incredible. It is the best GraphQL framework I've worked on with excellent /EF(core)?/ support (even better than that of Hasura and dgraph) on the .NET ecosystem and overall software engineering. Maybe I can even swap the data source out with MongoDB as well, since it actually accepts IQueryable as the resolver source.

.NET is so incredibly underrated...