Alexander Dugin is right-wing and religious—and a disciple of Heidegger‘s.
Michael Foucault is left-wing and atheist—and a disciple of Heidegger‘s.

Here is Dugin on the philosopher who accomplished “the most all-encompassing, paradoxical, profound, and penetrating study of Being. I am talking about Martin Heidegger.” (Source: The Fourth Political Theory, 2009))
And here is Foucault: “Heidegger has always been for me the essential philosopher.” (Source: Foucault Live (Interviews, 1961-1984)
Let’s focus on the philosophical roots of illiberalism, not just the varying symptoms.
For more: my coverage of Heidegger, Foucault, and Dugin in the Philosophers, Explained series:
I don’t think it’s fair to view Heidegger through the eyes of these degenerate frauds.
A great teacher of philosophy
With profound depth of the subject, intellectual clarity, complete awareness of the surrounding social situation, perfect grasp of the philosophical perspective, and complete mastery over writing and speaking, the name is Stephen Hicks.
I always learn a lot from you.
Stay blessed my dear professor!