dawn makes more bubbles..
Regardless of the brand of dish soap you use, (other sites claim Palmolive, Ivory, Dawn or other brand), add a small amount of glycerin for blowing bubbles (not for bathing)...
Dawn by far, the soap is more concentrated
Not sure about today, but some years ago when there was a comparison test done, Sunlight produced the biggest, longest lasting bubbles of all dishwashing...