This is health insurance bought by an individual rather than an employer buying a plan to cover employees.
The individual making the application can also include immediate family members in the application, but the application is still being made by an individual.
A family is not a group for health insurance purposes. Only an employer can buy true group coverage. Employees form a group. Employees can add family members to their employee coverage.
So the plans you can buy are classified as Individual Health Insurance. There is no category of health insurance called "Family Health Insurance".
You can cover a family on an Individual Health Insurance plan by buying as an individual and adding family members as "dependents".