Change Type field when generating reports, Why is it not in the available as a field?

We've created an in house reporting system that we import data into from GoToAssist Service Desk by using the CSV export since the reports in GoToAssist do not meet the our needs or that of our customers and the flexibility of the custom reporting just isn't there.

That's my rant.  What I don't understand is why types are not a field available in the report.  We use this field to describe the type of change activity and have seven identical entries for all services.  We want that visible in the report to categorize the type of change work being done.