Haven't read all of that, but it strikes me that some of these authors like Freud and Levi-Strauss are perfectly understandable without much background. Haven't tried Kant but other authors consider him very methodic and logical, about the opposite of Deuleuze, and he's a big inspiration for the very readable Schopenhauer.
Maybe Hegel and Heidegger are where things get complicated.
Maybe Hegel and Heidegger are where things get complicated.