Do I have to add my spouses W-2 to our income if it was for an amount less than $200 (federal and state income tax should $0 for that W-2) when filing married jointly?

Of course you do.

When filing joint, absolutely all income, every penny of it, gets reported on the tax return. Even if it's only $1 reported on the W-2, you have to report it. Remember, the IRS already has a copy of that W-2 and if you don't report it on  your return, you will get flagged regardless of the amount.

Every W-2 that you received must be reported on your tax return, even if they are for small amounts.  Remember that each one of those W-2’s has your Social Security number on it, and that income was reported to the IRS by the employer.  You do not want to get in trouble with the IRS for under-reporting your income.
ALL of your W-2’s must be entered on the SAME tax return.  After you enter the first one, you click Add Another W-2.