N400 Evidence About Marriage

[aquatic_brewer 39]

I'm preparing evidence of marriage for my N400 (filing under the 3 year rule).  We don't really have any many bank or credit card statements with both our names on.  We do have 3 years of IRS tax transcripts showing that we filed jointly though.  Are the tax transcripts the "gold standard" here?  Other things I can think of that are in both our names are car title and maybe the car insurance docs.

 

Oh we also just had a baby...so I guess that's evidence too

 

Edited May 9 by aquatic_brewer
Additional context

[OldUser 6,636]

Tax return transcripts is the bare minimum for 3 year rule N-400. Do include birth certificate for the baby. Any medical bills showing both names? Insurance? What about lease?

Edited May 10 by OldUser

[aquatic_brewer 39]

Birth cert I have, I have house insurance docs for the last 3 years and car insurance for the same period. We have joint bank accounts but only one of our names appears on the statement which is annoying. We also have credit card statements which show me making payments to her account. The statements are not in a joint name though. 

[MMRF 21]

Can the bank w/ the joint account provide you something indicating that it is a joint account?