I'm Italian. Habermas and Apel are not analytical. Habermas is from Frankfurt school and Apel was influenced by continentals, analyticals and pragmatists.
But do you know that Schoppenhauer is very influenced by Kant, right? And not to forget that Kant take the concept of freedom from Rousseau.
Kant is the synthesis and the peak of enlightenment

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Kant is also the found father of german idealism, pragmatism and even phenomenology (in some way)