Married filing separately / How to split dollar amounts

Hello,

We are filing Married Filing Separately and are both taking the standard deduction to manage high student loans. We are married, live together, jointly own our home, and I have no income. There is no student loan interest due to the loans being in forbearance.

 

We have the following items to report:

A NY State inflation refund check in both our names (1099-G) for $300.

For our mortgage, we have a 1099-INT with $90 of interest and a 1098 showing $10,000 of mortgage interest in both our names.

We have a school and property tax bill in both our names.

A NYS STAR credit check in both our names for $200.

 

Lots of conflicting information online saying, 'they get reported by the person who paid them'... but we both paid everything together; joint accounts, everything in both our names. Which of these items, if any, must be split 50/50 between our separate returns when filing Married Filing Separately so that we don't double report? Also, would the school and property tax bill be reported at all if we are using the standard deduction?

 

I would imagine even though some of these items won't benefit us using the Standard Deduction, I would imagine we would still need to at least report it to the IRS when filing our taxes, right? We understand the tax implications of being married, filing separately, and not itemizing. Thank you.