The list includes traditional IRA, SEP IRA, and SIMPLE IRA, but does not include 401(k), 403(b) or similar accounts. If you do hold tax-deferred IRA dollars on 12/31 of the calendar year in which you made the Roth conversion, you’ll be subject to taxes when making your conversion per the pro-rata rule.
You cannot have tax-deferred money in a traditional IRA, SEP IRA, or SIMPLE IRA in your name.