F-1 Visa

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?

Question: My sister has been on F-1 status, currently on OPT and I want to file for her EB5 visa. I will fund her 75% of my money with cash that I earned from W2 and may get an equity loan if needed (total 800K). She wants to open an IT consulting company in Rural Area while on OPT. I have the following questions.

1. Is an IT consulting company a valid investment in terms of USCIS because one attorney mentioned it is not?

2. Does the count of hiring U.S. residents begin after the company is founded or after an I-526 application is filed?

3. How long will it take to get a conditional green card? How about non-conditional?

4. Is it a good idea to file now while on OPT-EAD or wait until she gets H-1B? She has another 2.5 years remaining on OPT.

5. Is it okay to use AP/EAD after she gets it while OPT-EAD? Can she still apply for H-1B after I-1485 is filed?

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?

My spouse is a dentist from India and converted to F-1 from H-4 on Sep 29, 2022. She pursued a few courses for MBA (non-stem) between March 2022 and Jun 2022. Now she is completing the remaining courses of her MBA on F-1 for the next 12 months.

My queries are-

1. Does she need to be on F-1 status for a min 365 days to be eligible for OPT?

2. If we ever need to change to H-4 status again (stamped till Aug 2024), can she travel to India and come back without F-1 stamping? or a COS application from F-1 to H-4 ( that may take 6 months) could be a better option for EAD application.

I have worked in the U.S. under L-1\H-1B from June-2015 to March-2020. I have been in India since the last 2 and half years (Not working for any US based company). Now I have got Job offer from a US company and the H-1B I-797 petition is approved. I have a previous employer's H-1B Visa stamp (which expired last month) in my current passport, and B1/B2 Visa stamp(got in 2013 and valid till Sep-2023) in my older passport. I also have approved I-140 (EB2) from my previous employer.

My Question is due to the high wait time for Visa appointments, in worst case, if I can not secure a visa appointment anywhere close to joining date, can I travel to the US with a valid B-1/B-2 Visa and approved I-797 and later change status to H-1B and join the job? If yes, would it impact the GC process in future?
 

I am currently on F-1 Stem OPT, and my H1B got approved this year a few days back. My current company is shutting down its operations and moving everything to Mexico.
1. They have given me the last date of employment as 31st October 2022. So my question is how soon can I change my employer and can I transfer my H1B to a new employer before 1st October 2022? 
2. Also, if I can do my visa transfer only after October 1st 2022,?
3. Can I do that with 1 paystub, or will I require 2 paystubs?