Aside from Rockstar who is really creating creative/spontaneous open world games these days? Recently Cyberpunk 2077 was creative but everything else fell flat. Nobody has really gotten it right since TW3 which released back in 2015. We're definitely in need of somebody to come along and raise the bar again.
I haven't really played many open-world games recently, perhaps due to the fact that none of them have really appealed to me. Open world fatigue, I think.
The last ones I did play that truly felt special were Breath of The Wild and Phantom Pain just to name two. Obviously, those aren't "new" games, but to me, those are open-world games that felt rewarding and provided you with a great sense of discovery. No doubt there's more, but Ubisoft games really don't give you a great sense of discovery. They give you the illusion of it, but it's all a facade.
Even Rockstar to be honest. The worlds they create are very impressive, but you're confined to an outdated mission structure that's quite boring.