In relation to annuitized IRAs, where the IRA owner has purchased an immediate annuity to satisfy his/her RMDs, does a designated beneficiary have the right to “stretch” the remaining value rather than continue to receive any remaining guaranteed payments or the commuted value of such payments?

I would like to figure out if there is a difference in how the funds are “classified” according to the IRS, if the IRA funds are annuitized? It is my understanding that a designated beneficiary has the right to transfer the IRA value to an Inherited IRA if the owner dies prior to or after the required beginning date, so does annuitizing the IRA funds remove the stretch option for the designated beneficiary?