Currently playing Metro Exodus, and while *technically* it's not totally open world, it's very open-worldish. In the same vein, Dragon Age, Divinity: Original Sin, etc., also can feel quite open world (large, open areas) without actually being a true open world. Because, technically speaking, even Witcher 3 isn't open world, not really, it just has huge open maps, but they're still separate maps (White Orchard, Velen, Skellige, etc, you can't seamlessly travel between them).

Also I feel some MMOs fit the bill, especially the ones where you can play solo. Elder Scrolls Online is amazing, if you liked Morrowind, Oblivion and Skyrim. Most of the content is easily soloable, all quests are fully voiced, and while it's technically not open world, the map is HONKING HUGE, individual zones are huge, etc. Many of the quests are pretty weak, but quite a few are really well done. And the content of the expansions for it are usually self-contained to that new zone, with an overreaching story arc, which is nice. And even WoW, when played solo, can be nice if you get sucked into the lore and read all the text (I wish WoW had voice acting like ESO does).

And there's also survival games where story isn't their strong point, but the story is still there. Such as The Forest (sequel coming in February).