I found NerdNu and it feels like a medium sized server that really cares about community and mostly vanilla gameplay. It is for players who miss that old Minecraft feeling where people actually know each other.
The PvE server is updated to 1.21.10 and it is survival building without PvP so you only worry about mobs. People work together on towns and big city builds and the PvE map reset on September 19th. They also do games nights with different player hosts like spleef thimble and ice boat races on Fridays at 7:30pm and Saturdays at 1pm US Eastern time.
There is also a Creative server on 1.21.10 with open world building and a mix of natural terrain and world painted areas. You can protect your builds and WorldEdit is free to use. Creative has community events too like spleef and speed build on alternating Saturdays and their current map revision started on June 22 2024.
Their snapshot server is currently closed because of recent updates and they will announce when it comes back.

