I'm working on a React.js web app that leverages GraphQL for accessing a combination of varying endpoints, including our org's SF data. My only issue is isolated to my Salesforce progress. In general, it's an OAuth connected app with full access permissions. I've managed to get everything wired up and using the 'GraphiQL' interface, I have the ability to successfully query Salesforce standard and custom objects. However, the only fields that seem to return any data, (from any of the objects), are 'Id' and 'Name'. All other fields, standard or custom, return 'null'.
I have a version using NForce and another using JSForce, both return the exact same result. API access is selected in System Permissions. I've tried numerous profiles including my own admin account. I've ensured that all permissions I can find (field level, object, etc.) have "View All Data", "Modify All Data" and anything API related is selected. I'm a Frontend Developer with halfway decent admin skills, but apparently not deep enough to figure this one out.
I've scoured the googles, but there is very little reference material using this combination of solutions and any related help is scarce. At this point, I'm just spinning my wheels and I'd very much appreciate any assistance. Thanks in advance.