Using 'sys.contentType.sys.id[in]' along with 'order' does not work in Contentful API

I have 3 content models - 'Article', 'Supplier Showcase' and 'Landing page'. Performing search operation with order works when using queries with individual models such as

{
  query: 'PVD',
  content_type: 'article',
  order: 'fields.adminTitle',
  limit: 10,
  skip: 0
} // This works

However, it does not work when used with 'sys.contentType.sys.id[in]'

{
  query: 'PVD',
  'sys.contentType.sys.id[in]': 'article,supplierShowcase,article,landingPage',
  order: 'fields.adminTitle',
  limit: 10,
  skip: 0
} //This does not work - returns empty response

Is there anything that could be done to make this work? Any help would be much appreciated.

You can't sort on specific fields unless you specify exactly one content type in your query.

From the Contentful documentation:

Note: When querying entries and using search filters based on fields or ordering by fields you must specify this parameter. You can only specify one value for content_type at a time.