GraphQL is still very undefined I've found. It can do basic queries and very limited traversals. The biggest problem is that there isn't really any real implementations for it, the spec is still a working draft, and it hasn't evolved much past defining schemas and doing basic queries.

I find what they have defined so far far more approachable than Cypher or Gremlin. As they have been adding features it is starting to sprawl and look just as nutty as the others. But I do like how it is defining the whole ecosystem around how graphs can be defined and interacted with, much like Gremlin has, but with a much more focused and disciplined approach.