Season 1

All English-language seasons of The Traitors (based on the Dutch series De Verraders)
https://en.wikipedia.org/wiki/De_Verraders#International_versions
https://en.wikipedia.org/wiki/The_Traitors_(American_TV_series)
https://en.wikipedia.org/wiki/The_Traitors_(British_TV_series)
https://en.wikipedia.org/wiki/The_Traitors_(Australian_TV_series)
https://en.wikipedia.org/wiki/The_Traitors_(Canadian_TV_series)

A subjective ranking of the documentaries, competition shows and trashy reality seasons.