to this list https://developers.themoviedb.org/3/certifications

Source: http://www.dfi.dk/Service/English/Children-og-Youth/The-Media-Council-for-Children-and-Young-People-in-Denmark/Film-Classification/FAQ.aspx and https://en.wikipedia.org/wiki/Motion_picture_content_rating_system#Denmark

"DK": [
      {
        "certification": "A",
        "meaning": "Films that are allowed for all.",
        "order": 1
      },
      {
        "certification": "7",
        "meaning": "Films that are allowed for all, but not recommended children under the age of 7.",
        "order": 2
      },
      {
        "certification": "11",
        "meaning": " Films that are allowed for children over the age of 11.",
        "order": 3
      },
      {
        "certification": "15",
        "meaning": "Films that are allowed for children over the age of 15.",
        "order": 4
      },
      {
        "certification": "F",
        "meaning": "Exempt from classification. E.g. DVDs produced for teaching, research or hobbies",
        "order": 5
      }
    ],

Source: http://www.medietilsynet.no/globalassets/engelsk/engelsk-quickguide-aldersklassifisering.pdf and https://en.wikipedia.org/wiki/Motion_picture_content_rating_system#Norway

"NO": [
      {
        "certification": "A",
        "meaning": "Suitable for all.",
        "order": 1
      },
      {
        "certification": "6",
        "meaning": "6 years (no restriction for children accompanied by an adult).",
        "order": 2
      },
      {
        "certification": "9",
        "meaning": "9 years (children down to 6 years accompanied by an adult).",
        "order": 3
      },
      {
        "certification": "12",
        "meaning": "12 years (children down to 9 years accompanied by an adult).",
        "order": 4
      },
      {
        "certification": "15",
        "meaning": "15 years (young down to 12 years accompanied by an adult).",
        "order": 4
      },
      {
        "certification": "18",
        "meaning": "18 years (absolute lower limit).",
        "order": 5
      }
    ],

Source: https://www.statensmedierad.se/ovrigt/inenglish/filmclassification.580.html and https://en.wikipedia.org/wiki/Motion_picture_content_rating_system#Sweden

"SE": [
      {
        "certification": "Btl",
        "meaning": "All ages.",
        "order": 1
      },
      {
        "certification": "7",
        "meaning": "Children under the age of 7, who are accompanied by an adult (a person aged 18 or over), are admitted to films that have been passed for children from the age of 7.",
        "order": 2
      },
      {
        "certification": "11",
        "meaning": " Children over the age of 7, who are accompanied by an adult, are admitted to films that have been passed for children from the age of 11.",
        "order": 3
      },
      {
        "certification": "15",
        "meaning": "Children under the age of 15 are not admitted to any film that is "not approved" for viewing by children.",
        "order": 4
      }
    ],