About Tax returns and W2 etc for 485.
Friends, I will just tell you what my lawyer asked for.
He did ask for last 3 years tax returns, 3 years W2. I did not question why he wants that.
My guess is that for AOS, you need to show that you have maintained status. For someone on H1, the one of those needs to maintain status might be that he got paid wages as offered in the LCA.
Everyone's case is different, and based on situation and lawyer, documents asked maybe different.