Skip standard fields in GraphQL query results without strongly-typed items

Question

Is there an easy way to return all fields, while skipping standard Sitecore fields in GraphQL query results without strongly-typed items? I know that I can use fields(ownFields:true), but it will remove inherited fields from all templates, but I want to skip only standard ones with __ prefix.

I have exclusions of standard field in my configuration, but this removes standard fields only from the schema, but not from query results:

<fieldFilter type="Sitecore.Services.GraphQL.Content.TemplateGeneration.Filters.StandardFieldFilter, Sitecore.Services.GraphQL.Content">
      <exclusions hint="raw:AddFilter">
           <exclude name="__*" />
      </exclusions>
</fieldFilter>

Answer 1

Without a sample query reference to tailor my answer, I think what you could leverage here are query fragments to help with multiple templates.

For example:

fragment itemDetails on Item {
  id
  name
  children{
    children(includeTemplateIDs:"{GUID}"{
      id
      name
      someotherfield
    }
  }
}

You can then leverage the fragment on your query

query GetPageContent($datasource: String!, $contextItem: String!) {
  datasource(value: $datasource) {
    ...itemDetails
 }
 contextItem(value: $contextItem) {
    ...itemDetails
 }

Ps: Please validate this syntax, just guiding on the approach here