H Visa

I need to relocate to India for family reasons in 2025. My I-140 has been approved for over 180 days, and my initial H1B visa is valid until August 2025. I want to keep my options open if I decide to return to the US in the future.

1. Is there any difference in moving to India before or after filing for my H1B extension if I plan to return to the US with the same or different employer?

2. Additionally, is there a time limit within which I must return to the U.S. with the same or a different employer with an approved I-140?

3. Do I need to go through the H1B lottery again anytime if I want to return in the future?

4. Does it matter if my PD is current when I return to the US?

1. I am currently in a 60-day grace period due to a layoff and am in the process of finding a new employer to file an H1B transfer. I have two questions regarding my situation:
If I apply for a B1/B2 visa on the 59th day of my grace period and it is approved within two weeks, can my new employer still file an H1B transfer using premium processing? 

2. Specifically, I am concerned about the impact of my status change from H1B to B1/B2 and then back to H1B on the processing of the transfer.

3. My family members hold a valid US visa stamping until March 2027, which was obtained using my previous employer's I-797. Can they enter the US using this existing visa with a copy of my new employer's I-797 at the port of entry?

During the last three years on H-1B, I have spent approximately one year outside of the US (multiple visits to India). What is the procedure to recapture that time and add it back to my H-1B total time?

Scenario: Currently working for company A. Company B has filed H1B petition and gotten approval for Oct 1st start date. Unfortunately, Project with company B goes away before Oct 1 and company B doesn't revoke my visa before Oct 1st.

1) Since I will automatically move to H1B on Oct 1st and I don't have that project anymore, can I continue to work for my current employer using the new H1B visa? (What options I have if I want to use the new H1B visa and work for the same employer?)

2) In the same case, will company A be notified about my new H1B visa on Oct 1st?

3) Will company A have to rehire me for H-1B transfer? or can I continue to work with them while the transfer is pending?

4) How would it work if I find a new project through a new company C? Would they need to file for H-1B transfer as well ?

5) What info can USCIS ask for H-1B transfer in that case? What sort of RFEs may come up?

Two general questions,

1. What are the benefits of filing an EB2 NIW for a person whose I-140 has already been approved by an employer in the same category apart from NIW, not depending on your employer? Also, can you get your I140 approved priority date to your NIW?

2. Is it possible to renew the H-1B visa stamp before expiration? For example, if my H1B expires on November 1st and I apply for a visa stamp in October with approved extension I797, Would I be able to renew it?