L2-H1B

You should be discussing these matters with your employer's immigration attorney. This attorney is the best position to give you guidance as they...

Is there ANY way to return at all? Possibly as a non immigrant?

Your options are severely limited. You may be able to obtain a nonimmigrant visa with a waiver. You could also request humanitarian parole. There...

All my family

Your question is not clear. Kindly re-post your inquiry or contact an attorney directly for assistance.

You cannot start employment until you have the EAD card in hand. You should indicate the old passport number as that is the one linked to the I-94.

I485

Yes, if the immigrant visa category for which you are filing the Form I-130 is immediately available or the priority date is current.

DACA application.

Your son does not appear to be eligible for DACA. He must meet all eligibility criteria to receive DACA. You can find the requirements at...

I need to know that is she a Resident Alien or a Non-Resident Alien or none of these two. Please let me know, Thanks.

Your spouse is a non-resident alien. She would not become a resident alien until she is granted lawful permanent residence.

Embassy level

There is not enough information to address your question. You have not indicated what type of case you have and what you are trying to accomplish...

Is there any possibilities he can apply for his residency if he marries a U.S. citizen?

It is highly unlikely your boyfriend could obtain lawful permanent residence given his criminal history and multiple deportations.

What is the possible reasons for case return from NVC to USCIS?

The NVC would have to return the file to USCIS if you were pursuing adjustment of status. The NVC only handles matters involving consular...