Hi,
I don't know if there are any differences in how Graph via explorer returns the data and in what format but to answer your question here, I've been able to get the desired output by referencing the model from the additionalProperties. I don't have any Surface Go devices on my estate but I've got some Surface Go Laptops so the query should work fine for you if you change to your model.
Get-MgDevice -Search "model:Surface Laptop Go 2" -ConsistencyLevel eventual | Select id, @{Name="Model";Expression={$_.AdditionalProperties.model}}, displayName