When editing the Event Registration in the New Builder, you are only able to pull in "Form Field."
Form Field is not able to be pulled into the Candidate List whereas if you were to be able to use the Admissions Options in Admissions Setup, you would be able to pull the information into the Candidate Lists. Form Fields do not save to the user profile which is the reason it cannot be reported on.
Being able to use fields that are able to be reported on and pulled into lists would be immensely helpful for data management in the system.