| ActiveStudent | Student with completed profile All required fields are guaranteed to be present |
| ActiveTutor | Tutor with completed profile ready for bookings All required fields are guaranteed to be present |
| ActiveTutorWithAvailability | Active tutor with availability slots Used for displaying bookable tutors |
| BaseUser | Base user interface with core fields Used for general user references and lists |
| Student | Student type with student-specific fields Fields may be null if profile is incomplete |
| Tutor | Tutor type with tutor-specific fields Note: stripeConnectId is excluded for security Fields may be null if profile is incomplete |