The special things they make for comic con are not promos and they are different because there is no footage at that point. They are more like teasers then anything. Also Cruella is not new to the show, so it seems unlikely that they would do anything special for her, she doesn’t need to be introduced. They usually use footage from the show for the commercials and everything from now on is a commercial. Also, this is mid season, so for mid season they have had footage since before the end of 5A. All those teasers you put up have nothing to do with the commercials.
And the ones not made at SDCC WERE aired on TV. The Season 2 Fall 2012 lineup promo, Wicked is Coming promo, Elsa promo, and Dark side promo all aired on TV. The Dark side promo even aired during the Oscars last Season. The fact is, yes they have filmed special footage specifically for promos, and yes those very examples have aired.