How does one understand the product of a Diels Alder reaction?

am having trouble making sense of products of diels alder reaction. Like I understand the stereochemistry and everything but what I am confused about is how come textbooks don’t give a variety of products that is possible in a diels alder reaction. Like, I know that pericyclic reaction is all about the symmetry of lobes of dienphile and diene. That is exactly how the difference between antafacial and superfacial come in, in that in antarafacial since the lobes are not in symmetry, you have to twist the molecule to get symmetry. So in the same sense, I have realized that when u do diels alder reaction depending on the way you organize the lobes of the diene and dienophile you can get so many possible products. However textbooks don’t really mention this phenomenon at all. I have shown what I mean by different lobe symmetry in the picture below. Can anyone tell me what is going on or am I overthinking this or what?[![enter image description here](https://i.stack.imgur.com/PQfsP.jpg)](https://i.stack.imgur.com/PQfsP.jpg)


