A point about each scholar on your list.
Shaddal was firmly on the traditional side in his place and time. Anyone who seriously learns the Tanach as a whole representation of Judaism, is using many [but not all] of Shaddal’s methods. Nobody did more to uncover how the Rishonim viewed Navi, than him.
Rappaport in some ways is firmly within the most traditional camp of his day. In retrospect he is hard to place. His views and writings are not far out. And he published one the towering Torah waves that is still spreading throughout the world.
Heschel grew up … And was supposed to be.. The war ruined a lot. His writings are all to that generation and are harder to relate to today. Those that were nearer his orbit still quote his many on point sayings. And his Chumash Torah is everywhere. Just not in his name.