Could be he did more, I just used Wikipedia.
Angelo Badalamenti’s final score (AFAIK) was the 2018 series BETWEEN WORLDS, for which he provided the theme. Rather boring affair, though. And he didn’t really write a lot of stuff for the third season of TWIN PEAKS. So the last GREAT work he did was GOLD COAST (2015), IMO, even though he collaborated with others on that as well. Sublime electronic score.