You shouldn't be listing anything. That is the job of company C's immigration attorney ... talk to him/her.

How can I find out if there's an active warrant for my arrest for back child support?

Contact the court .... the police ... AND the state agency that enforces child support.

My kid's H4 denied, she is 5 years old. Visa expired on 12/31/2019

Do you have written proof that you filed an address change? If so, a MTR, with the help of an attorney, is the best way to proceed.

It will be OK as long as your trip to India is BRIEF and you remain on the payroll.

You need to run this by the company's immigration lawyer ... you don't have the authority to amend the employer's petition.

A 1. Will this denial void their 10-year multi-entry visa to the U.S. even though they have left U.S. before a decision was made on their first...

Is it ok to go abroad for longer period of times abroad on green card, considering my situation below? ?

Yes, if you stay out of the US for LESS than 6 months on any one trip, you should be able to return with your greencard ..... AND protect your...

Tough decision. Do you have WRITTEN PROOF that you contacted CIS with your address change? If so, the MTR probably makes sense.

H-1B denied, employer says refile is not an option. Is that possible?

First of all, this isn't "your" attorney ... the attorney works for the employer, not you. You are what is called a...

H1b documents sent to USCIS on 07/20/20, but the receipt received date on H1B receipt showing as 8/4/20. how to correct it?

You didn't tell us why this is important. Did you have a deadline? Talk to the company's attorney and have him/her fix it ... if important.