I filed I 130s for both my kids 9 and 15 year old with the same filing date, 2/2020

Check USCIS website for processing times and for the Visa Bulletin. Don't wait more than 1 year for the 9 year old's I-130 approval. I would...

Violation of probation likely a serious issue for you in the future.

I have a H1b transfer submitted April, 2020. I just got a new job offer today, can I revoke my previous petition & apply again?

Take advantage of Company B's offer to get an attorney so he/she can look into your case in greater detail.

Should I lodged I589 in my wife's name and add me & kids as derivative applicants? Or, should I wait until EOIR gets my case?

Contact a local non-profit legal aid organization today and get help. Good luck!

You need to provide further background on the immigration history of your parents. Depending on their background, they could adjust in the USA...

The change of address is important if the wage determination for the job no longer covers the new business location. Look at the wage determination...

Does a Marriage Certification provide legal status ?

No marriage itself does not provide you permanent (conditional?) resident status. Have your spouse file the I-130 at the very least as soon as...

There is always a small chance USCIS will look further into the marriage, but at this point, there is not much you can do more than you already...

Does my green card pass for the real ID

Yes that is acceptable from my understanding.

Moving from H4 to H1B what should be the order of approval matters?

You can withdraw the H-4 since you have the H-1B now. Good luck!