In House of the dragon (id: 94997; season: 1) crew is returned mostly as:

        {
          "job": "Editor",
          "department": "Editing",
          "credit_id": "6301d2b9f056d5007c81edae",
          "adult": false,
          "gender": 0,
          "id": 1432103,
          "known_for_department": "Editing",
          "name": "Tim Porter",
          "original_name": "Tim Porter",
          "popularity": 7.113,
          "profile_path": null
        },

But then for some reason one credit is returned as:

        {
          "job": "Prosthetics Sculptor",
          "department": "Costume & Make-Up",
          "person_id": "584eb8c2c3a368321500ee12",
          "credit_id": "65bda74289b561014a6d259c"
        }

In Married with children (id: 4239; season: 8) guests stars returned as:

        {
          "character": "Dexter",
          "credit_id": "64f39cbfcaa508010ae7f15f",
          "order": 1504,
          "adult": false,
          "gender": 2,
          "id": 8687,
          "known_for_department": "Acting",
          "name": "Chi McBride",
          "original_name": "Chi McBride",
          "popularity": 43.954,
          "profile_path": "/cesCeJZ5gSywA9lTYReB5uhkfek.jpg"
        },

But then for some reason one credit is returned as:

        {
          "episode_count": 1,
          "person_id": "5ffbd18e27d9cc003d04f0a6",
          "character": "Kevin",
          "credit_id": "64f39cf374507d00c5135cfd",
          "order": 1505
        },

Can someone explain why this is happening?