the below works but isn't very clean.

controller.cs

// initalize resi_vid/hsd/voice and comm_vid/hsd_voice to 0...


// result.summary.products is List<ImpactProduct> Summary.products

foreach (var r in result.summary.products)
{
    if (r.customer_class == "Residential" && r.name == "Video")
    {
        resi_vid = r.customer_count;
    }
    if (r.customer_class == "Residential" && r.name == "HSD")
    {
        resi_hsd = r.customer_count;
    }
    if (r.customer_class == "Residential" && r.name == "Voice")
    {
        resi_voice = r.customer_count;
    }
    if (r.customer_class == "Commercial" && r.name == "SMB Video")
    {
        comm_vid = r.customer_count;
    }
    if (r.customer_class == "Commercial" && r.name == "SMB HSD")
    {
        comm_hsd = r.customer_count;
    }
    if (r.customer_class == "Commercial" && r.name == "SMB Voice")
    {
        comm_voice = r.customer_count;
    }
}

var subscriberCounts = new SubscriberCountModel
{
    Residential = {
        Video = resi_vid,
        Internet = resi_hsd,
        Voice = resi_voice
    },
    Commercial = {
        Video = comm_vid,
        Internet = comm_hsd,
        Voice = comm_voice
    }
};

model.cs

public class ImpactProduct
{
    public string name { get; set; }

    public string customer_class { get; set; }

    public int customer_count { get; set; }
}

public class Summary
{
    public List<ImpactProduct> products { get; set; }
}

public class RootObject
{
    public Summary summary { get; set; }
}

samples.json

"summary": {
"products": [
  {
    "name": "Video",
    "customer_class": "Commercial",
    "customer_count": 500,
  },
  {
    "name": "HSD",
    "customer_class": "Residential",
    "customer_count": 1200,
  },
  {
    "name": "Voice",
    "customer_class": "Residential",
    "customer_count": 1900,
  }
]