Looking for a home outside the big boys

Greetings everyone!

I was wondering if there is any mmorpg, worth getting into and investing time, effort and yes even money, that's not World of Warcraft, Final Fantasy 14, Elder Scrolls Online or Guild Wars 2? I am not interested in games like Throne and Liberty, Black Desert Online and so on, I prefer old school games to these.

I love mmorpg's where we can explore a big world that feels alive, where we can gather and craft meaningful items for our character or for others, where there is an economy with a market or auction house, a mmorpg where we can group up with people for dungeons, raids or even harder quests. I'm simply trying to move away from WoW.