crossword-8.x-1.x-dev/modules/crossword_image/config/schema/crossword_image.schema.yml

field.formatter.settings.crossword_image_rendered:
  type: field.formatter.settings.image
  label: 'Crossword Image (rendered) settings'
  mapping:
    crossword_image:
      type: string
      label: 'Crossword Image Type'