PowerApps and Content Types

My issue may be slightly different. I have an Intake List with multiple content types. I have successfully used visibility formulas to hide the fields that do not apply to the content type.

With default SharePoint forms, the user select New, then the Content Type desired e.g. "New Employee Onboarding" or "Employee Termination", or "New Hardware or Software Request". Then the form opens with the content type already set and the correct fields. 

With PowerApps, it opens without setting the Content Type. I suppose I can hide all the fields except the Content Type field as a drop down list and then show the appropriate fields after that selection has been made. Going to try that, but if anyone has a better idea, let me know.