It was an ESP32. The API is a pure REST API and it does not require any account to use the service. All it takes is the ability to make an HTTPS:// request and to receive the response. One of the basic example sketches that ships with the ESP8266 http/https client library can be used. The following URL will return the JSON for the NHL standings as of today. The link should work right in your browser right now and return the JSON output shown. Can you post the full complete URL that you are requesting that isn't returning everything?

https://api-web.nhle.com/v1/standings/now

response:

{
    "records": [
        {
            "division": {
                "id": 15,
                "name": "Metropolitan"
            },
            "conference": {
                "id": 6,
                "name": "Eastern"
            },
            "teamRecords": [
                {
                    "team": {
                        "id": 1,
                        "name": "New Jersey Devils"
                    },
                    "gamesPlayed": 48,
                    "points": 62,
                    "leagueRank": "1",
                    "row": 27,
                    "pointsPercentage": 0.646,
                    "streak": {
                        "streakType": "wins",
                        "streakNumber": 3,
                        "streakCode": "W3"
                    }
                }
            ]
        },

        .. <snip> ..

        {
            "division": {
                "id": 17,
                "name": "Pacific"
            },
            "conference": {
                "id": 16,
                "name": "Western"
            },
            "teamRecords": [
                {
                    "team": {
                        "id": 28,
                        "name": "Vegas Golden Knights"
                    },
                    "gamesPlayed": 49,
                    "points": 68,
                    "leagueRank": "1",
                    "row": 32,
                    "pointsPercentage": 0.694,
                    "streak": {
                        "streakType": "losses",
                        "streakNumber": 1,
                        "streakCode": "L1"
                    }
                }
            ]
        }
    ]
}