This is similar to $editcontext.editType.
Add editMethod property to the $editcontext property for the Form Calculation and Constraint Arcade Profiles (e.g. $editcontext.editMethod). It would return generalized methods of geometry creation such as "Manual", "GPS", or "Multiple". I could write it to an attribute in my schema to store this value or use it to inform other actions.
Generally, I might want some insight in which method was used to capture geometry for the last edit (written to an attribute) or which method is being used for the current edit.