Missing labels/keys for the counters

Im looking for the labels/keys for the event counters so I can add some of them to my monitoring.
Specifically App Insights, I require the labels/keys and the "core" counters includes this in the "well-known" eventcounters documentation: https://docs.microsoft.com/en-us/dotnet/core/diagnostics/available-counters

You already have the available counters in this article, but there is no way to find the labels/keys. Even a simple link to the defining class in github would be a real help.

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#### Document Details

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* ID: 8279da7e-0aac-7700-bbc3-689c8be5c710
* Version Independent ID: 4e7bbba2-6149-830e-e560-2f19973ceab6
* Content: [Event Counters - EF Core](https://docs.microsoft.com/en-us/ef/core/logging-events-diagnostics/event-counters?tabs=windows)
* Content Source: [entity-framework/core/logging-events-diagnostics/event-counters.md](https://github.com/dotnet/EntityFramework.Docs/blob/main/entity-framework/core/logging-events-diagnostics/event-counters.md)
* Product: **entity-framework**
* Technology: **entity-framework-core**
* GitHub Login: @roji
* Microsoft Alias: **avickers**