I have all of these off, and I still occasionally receive promotional emails from Apple with no "unsubscribe" link anywhere. I've had the same concern as the OP

I have all of these off, and I still occasionally receive promotional emails from Apple with no "unsubscribe" link anywhere. I've had the same concern as the OP, but I've come to the conclusion that I probably can't do anything about it without risking my Apple account.