EB2/485 Different status for self and wife

[skam]

Hi Friends

My EB2/485 application is now become current recently. I checked the case status on line and found that my wife and kids has a status 'Document production or Oath ceremony' while I have a different status 'initial review'.

What exactly the status 'Document production or Oath ceremony' mean?

Why I have a different status of initial review? I am the principal applicant and they are my Dependants.

Any suggestions or similar experiences?

Thanks