Think for me it’s probably the expanse for how well suited the opening and theme is to expressing the vibe of the show.
Other shows I’d rate the theme music/opening vibe favourably include:
The 4400 (2004 version)
Battlestar Galactica
Community
Foundation
Flight of the Conchords
Halt and catch fire
Mandalorian
Silo
Westworld
Factorio on peaceful settings is pretty calm