We consider the following items as personal profile information
a. Profile picture
b. Place of residence
c. Mobile number
d. Date of birth (therefore, age)
You can disable the sharing for all of them if you do not want others to see them in your profile.
Of these five, the profile picture, place of residence and education details are enabled by default. You need to disable them manually. The other two, mobile number and date of birth, are disabled by default.