The #Succession theme was what actually got me into watching the show. I absolutely loved the finale's "Andate Risoluto" piece, one of many throughout the series. It's a slow, similar take which builds to a statement of "I am the new King."

Here (earlier seasons) the composer Nicholas Britell talks about how he developed the motifs and variations.
https://youtu.be/X0WzqanwlG0