The reports we use in our API integration are structured the same way as the Raw Data Reports in the Appsflyer Export Data page. If you are looking to export the Raw Data page you can follow the link below:
https://support.appsflyer.com/hc/en-us/articles/360008613838-Raw-data-export-page

If you want all available data you can connect multiple Appsflyer data sources, one of each report per app.

Read more about the raw reports and what is (and can be) supported here:
https://support.appsflyer.com/hc/en-us/articles/209680773

The Event Name will be install and the Count metric will show how many non-organic install events there are. Read more about this report here:
https://support.appsflyer.com/hc/en-us/articles/209680773#installs-and-retargeting-conversions

Example

Similar to the install report but for uninstalls. Read more about this report here: https://support.appsflyer.com/hc/en-us/articles/209680773#uninstalls

Example

The Event Name dimension will capture all non-organic in-app events. Read more here:
https://support.appsflyer.com/hc/en-us/articles/209680773#inapp-events

Example

These reports are Appsflyer premium features, read more about the reports here:
https://support.appsflyer.com/hc/en-us/articles/209680773

If you send a dimension as an event value in any of the AppsFlyer SDKs (that are not any of the standard dimensions listed below) you can include those when connecting a new data source in Funnel as well. To do this you have to manually type in the event names when prompted.

These dimensions are always available in Raw Data reports.

These metrics are always available in all Raw Data reports.