What's your favorite open-world MMO?

Hey folks! Recenly i had an itch for exploring and i need some help with choosing MMO just for that.

So that itch coming from my initial WoW experience and playing WoW classic years later. Don't get me wrong, i can stiil boot up some classic and play a bit, but i really want something fresh. And i really can't find anything close enough to WoW's open world.

I tried ESO, FFXIV (currently my fav game overall), some korean mmos. Now i'm trying GW2 for the first time and it's pretty cool. Locations are interesting, main city of my race positively stunning. But it's still not enough. Damn loading screens between locations driving me crazy. "All i want" is a diverse seamless open world which i can explore on foot or on non-flying mount.

So, ugh, do you have any recommendations here? From what i heard probably Everquest, OS Runescape and New World fit the bill a bit. But i'm not a fan of OSRS artstyle and heard that EQ and NW in a tough spot right now.