Starfall Sanctuary is a semi vanilla server that just started Season 4 and it is looking for a few more people to join. It is a small adult group around 10 players and they have been playing together for a long time across many seasons. The vibe is chill and it is more about friends and building than trying to be a huge server.
The world is still fresh and there is a live map you can check. They picked a seed where the spawn continent has all biomes so builders have lots of choices.
It is vanilla plus with a bunch of quality of life stuff like proximity voice chat graves homes and TPA and a toggleable timber feature. There are creative helpers too like an armor stand editor mini blocks mob and player heads invisible item frames and a painting picker with the stonecutter.
They run strict rules and keep things drama free. Mobs do not grief builds and they watch for trouble with rollback tools. X ray and hacks are blocked so it stays fair.

