Marriott Concierge did get back with me and I have updated the first post.

I removed a couple of codes that are now only used as corporate codes. I did not remove the codes that are no longer in use, but added a reference. Marriott Concierge did let me know that some codes are supposed to be used only if booked through e-mail. I added those references as well, though I have not verified whether a hotel will honor one of those if made online. (I checked and at least some of them can be reserved online. I just don't know if a hotel would or have to honor that rate or not.)