I have read the existing question - Does the camera white balance setting affect the raw image at all?
After reading the above post, I am still not clear on the part around exposure. Is it possible that selecting one white balance over the other can cause the exposure to be different? This answer from that question in particular brings that point up exactly: http://photo.stackexchange.com/a/3598/4892
As far as I have heard, the WB does not affect the RAW data, but it does affect the exposure.
So in difficult lighting situations the camera auto exposure might react differently depending on the WB.
For an example, what if I always shot in RAW and always shot in Auto WB, or always Incandescent WB. If I am WB correcting in post regardless and ignore any "preview", am I losing any information or altering the exposure by leaving the WB in one of these settings?
I found additional discussion of this topic but no real answer here. I also found someone who recommended instead of Auto WB, to always leave the camera in WB 5000k to keep the most information.