Change of status

I am on an H-1B visa and recently got laid off.

If I don't find a job within the 60 days grace period:

1. Can I go back to my home country and keep applying for jobs and then come back once I get one? If yes, would I have to go through the lottery again?

2. If not, what are my options?

3. What additional documents do I need to provide while applying for my new visa to explain the missing pay stubs?

4. What does the company that let me go send to the USCIS as documentation for termination of contract?

Question 1: If H-1B transfer is approved but not joining the new employer, then what all is required to be done to avoid any problems? - Is it required to withdraw all approved H-1B transfer petitions in that case?  What is the validity of H-1B transfer approval?

Question 2: I am currently working for Company “A” on an L1A visa which is valid until 09/12/2024. I have my i140 approved that was filed by company “A” in EB2 with May 2019 as the Priority date. I am from India. Company “B” filed my new H1B.
My new H1B petition (I 797A, notice of action) and accompanying request for a change of status got approved on Dec 21st 2022. Employer “B” shared with me the approval copy only on 29th Dec 2022. I 797A, notice of action says my new I 94 is valid from 12/21/2022 until 10/10/2025. Will my work authorization status in the US reflects as H1B only if I submit my new Form I-9 through employer B? or is it already effective from the date of H1B approval i.e., 12/21/2022?
Is there a time limit within which I have to resign from my current employer “A”? What’s the maximum number of calendar days I can continue with my current employer “A” from the date of my new H1B approval i.e., 12/21/2022?

I was on F1, and my spouse was on F2. My H1B was approved in 2020 for client A, but COS from F1 to H1B was denied, so I just continued my F1 status. Later, I moved to client B, and my employer filed an H1B Amendment and got the complete approval with I-94, effective 29th April 2022. After approval, we filed I539 for my spouse's COS from F2 to H4 (still pending) with a receipt date of 17th May 2022.

Question: Since there is a gap between my H1B start date (04/29) and my H4 receipt date (05/17), may the USCIS deny our case? If so, what are our best options to proceed further?

Given the current situation with tech layoffs, I wanted to understand the options available for people in my situation.

I’m currently working in the US on H-1B and my GC application (I-485) with PD July 2014 and 485 is in “Case remains pending”.

I have 485 EAD approved till 2024 and Advanced Parole is still pending.

1. Since we only have 60 days on H-1B to find a new job. How easy is it to switch to EAD? Is there a procedure to follow to switch to EAD?
2. Once someone switches to EAD. Can they again switch back to working on H1 after finding a job?
3. Now if someone switches to EAD and their date becomes current before they can find a job. What are their options?

Now if someone switches to EAD and their date becomes current before they can find a job. What are their options?

Also, do we have any info on what the status “Case Remains Pending” means?

My status changed from F-1 to H-1B status this year on Oct 01, 2022. Since I am now on an H-1B visa, I am planning to buy a house soon, before the end of this year, and my plan is also to rent out other rooms and maybe Airbnb in the future. I researched this is considered passive income and is legal but:

1. I was wondering if I can do the same by opening an LLC. Will this still be considered passive income?

2. Another question, since my status changed from F-1 to H-1 this year, for 2022 taxes, should I still fill out the 1040 NR form or not?