Pretty sure you just haven’t figured them out, some of the themes in invincible coincide with themes in The Boys as well, and then there’s even more on top of those. They’re all fairly easy to notice too, for instance, both The Boys and Invincible explore what level of wrong doing can be justified if it’s done for a good purpose. Also it’s odd that you chose The Boys tv show as an example of having themes, yeah it does, but it also has far more moments intended for shock value than invincible does