I’ve seen:
Island Of The Idols
Winners at war
Heroes vs villains
China
Game changers
Cook Islands
Samoa
Blood vs water
Cagayan
Fans vs favs (caramoan)
Cambodia
David vs Goliath
Edge of extinction
I would recommend Vanuatu, THE AUSTRALIAN OUTBACK!, Africa, The Amazon, Marquesas, Fiji, and Pearls Islands. And then you may as well watch Samoa (1st season), Thailand, and watch All Stars.