Why would you need to file single for 2022 since your spouse already has ITIN?
This is just what I would do — I would file 2022 asap via e-file, and if it processes quickly enough, I’d use those and also provide all documentation that you filed 2021 and paperwork from the IRS showing that it’s in process still, and then I would also provide 2020 and 2019, that way they would have 3 completed tax years, plus can see you did file 2021. Again, this is just the most rational thing I can think of to do in this situation, but others may have a better idea.