DominionSMP is a vanilla Minecraft server with a good community and a pretty simple setup: no economy, no homes, no tpa, just raw Minecraft. If you want a more old-school SMP feel instead of a server full of shortcuts, this is the kind of place where that fits.
It is aimed at small content creators who are trying to grow into Minecraft SMP YouTubers, so it works well if you want to play, make content, and build something with other players doing the same. It is kind of like Bliss in that way, but with its own style.
The server also has custom gems with abilities, so there is still a little extra to play around with on top of the vanilla base. If you like survival, PvP, raiding, and a more community-focused SMP, DominionSMP keeps it simple while still giving you a few unique things to discover.