For me it’s horizon zero dawn/forbidden west. I’ve had people tell me those games deserved more love and were “underrated masterpieces” when they both released next to some of the most respected and praised open world games ever of Botw and elden ring.
Having played both horizon games for a little, I personally think they are ok but absolutely on the lower end of repetitive open world without much interesting substance as you go on in the game, forbidden west moreso than the original. I’d say for me they lie in between ubisoft open world and elden ring/witcher etc but definitely closer to the former than the latter, and they were overshadowed becuase people saw the other open worlds games as just better.
I have played the first horizon just before BotW and it ruined that game for me. BotW felt empty, bland and boring compared to it.