I do not see Roth Rollover when applying for an IRA account.

To transfer a Rollover IRA to a Traditional IRA with IBKR you will need to set up an ACAT transfer in Client Portal. When setting up the ACAT transfer, you will need to select Traditional as the account type as Traditional and Rollover are considered the same for transfer purposes…

Yes, you can convert your traditional IRA to a roth IRA in the Client Portal.

Additional Information…

ROLL 401K INTO ROLLOVER IRA ACCOUNT

Yes, you can use an existing Rollover IRA account:…

No, contributions to a Roth IRA are not tax-deductible…