I would upload the 10 strongest quality pieces evidence for what they want on the first page. I would then upload more evidence in the unsolicited area. This is your one chance to make a good case. Good luck.
Either skip it, if you can, or upload a statement. It doesn't apply to you if you have no children or haven't divorced the USC. This is a pretty frequent question about online filing.
Not an issue. You paid your taxes......I wouldn't worry about it. To be clear, you are assisting your wife in her filing for her citizenship.....Good luck. Many, if not most, people find this to be the easy part of immigration as far as the interview. There is light at the end of this long tunnel called immigration.
Since filing Married-Filing separately requires info about you, include the US citizen's 1040. There is no reason to explain.
Your other evidence looks OK to me. I would not include emails, texts.....no need to raise unwanted or unneeded questions. BTW, I filed MFS for the first 3 years we were married for the exact reason you stated (we would have had to include my wife's income).
You were lucky you weren't sent before an immigration judge in 2024, imo. I agree with @Daphne .. I think I would surrender the Green Card at POE, then ask to be paroled into the country for a short visit as a visitor. CBP could either deny entry after you surrender the card, or they might allow you a short visit.
Maybe....maybe not. You came as a non-immigrant, violated the intent of that status, and overstayed once.....A Consulate Officer might think you will do so again. Roll of the dice, imo. ESTA is definitely out of the question, imo.