When you said you turn the wheel a little to the right the noise goes away. When you turn slightly right you are loading the left front wheel bearing and typically that would mean with a bad bearing like you said you found, that the noise should be louder till you turn back left and unload that bearing. I would definitely change both while you have the tools out and parts availability. This is all typically what is done when searching for a noise that just started and then the bearing, while being bad, is not way loose. In your case the bearing may be bad enough, you said lots of play when checking at 12 and 6, that it will make noises no matter which way you load it.