The AdWords API reports does not have fields to track individual conversion types like phone call conversions or website conversions. The
Conversions field will give the number of conversions for all conversion actions that you have opted into optimization. The
AllConversions field will give the total number of conversions which includes the website, cross-device, and phone call conversions. These two metric fields(Conversions, AllConversions) are available in
ADGROUP_PERFORMACE_REPORT.