MistyMC is a long term 100 percent vanilla SMP that started about 6 months ago. The world is meant to keep going and it is a no reset server.
It supports both Java and Bedrock players on the most recent versions. Console players can join too by adding the server as a friend.
The community is pretty tight and active and it is a good place to meet people. You can chill and build or bring friends and try to form a nation.
There is also a live map you can check called bluemap so you can see what is going on around the world.
MistyMC Long Term Vanilla SMP
GG.MINEWIND.NET New Server IPTerraScape Vanilla SMP Peaceful 18+
I found TerraScape SMP and it is a peaceful survival server for Java players. It is mostly vanilla and it keeps things chill since pvp is only allowed if both people agree.
The community is small and mature and it is an 18 plus server. They do events and the staff says they are happy to help if you have problems.
It has a few plugins like sit map art simple voice chat that you can ignore if you want and Bluemap. The rules are basic but important like be respectful and no griefing stealing or random pvp and you can build freely as long as you respect other people and their stuff.GG.MINEWIND.NET New Server IP