A personal team is automatically created for an individual with an Apple ID who doesn’t join the Apple Developer Program or Apple Developer Enterprise Program. Although, if you enroll as an individual, your personal team becomes your individual team.
If you enter your Apple ID, a personal team is created.
If you enroll in the Apple Developer Program as an individual, your personal team converts to an individual team.
If you leave the program, your individual team converts back to a personal team.
If you enroll as an organization, you keep your personal team and an organization team is created.