How can I get the GPU type of an SKU in `az vm list-skus`?

For example, when I do `az vm list-skus -l westus2 --size Standard_ND96asr_v4`, I only get
```
...
{
"name": "GPUs",
"value": "8"
},
...
```

But no information on the GPU model or type. I can only get the information from https://docs.microsoft.com/en-us/azure/virtual-machines/nda100-v4-series.

Is there an API I can query to get the GPU types of a particular VM SKU offering?

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* ID: 152b549b-d4b3-13e5-081c-c604b6e4d89e
* Version Independent ID: 3f79be78-ce75-ad31-304b-bad7d475ec9e
* Content: [az vm](https://docs.microsoft.com/en-us/cli/azure/vm?view=azure-cli-latest)
* Content Source: [latest/docs-ref-autogen/vm.yml](https://github.com/MicrosoftDocs/azure-docs-cli/blob/master/latest/docs-ref-autogen/vm.yml)
* Service: **virtual-machines**
* GitHub Login: @rloutlaw
* Microsoft Alias: **routlaw**