If you're looking for depth, Hytale probably isn't for you yet. The game is still early in development, what exists is awesome but it doesn't have that much content or depth yet. I'd compare it to Minecraft before the end update.
Vintage Story can get pretty deep, but be aware it's a lot slower and more hardcore than the other two. A lot of your time will be spent just trying to stay alive. Staying warm, getting food, farming, spending a long time crafting things like pots out of clay... You don't even get to mine until the mid-game, and finding copper can be a real hassle. Honestly it might be what you're looking for if you're into survival games. That said, I wouldn't say it has a TON of content, it's more that everything takes so much time to make that you'll spend ages finishing what's here.
In terms of raw content and depth there isn't any block game that can match the depth and content of Minecraft with tons of mods, I think.