We have various plugins such as mcMMO, GriefPrevention for claims, Multiverse, SignShop, and more!
Aside from normal survival, I currently have two other game modes set up. Planetoids, which is similar to skyblock, but the sky is full of differing planets, and a “UHC” mode on sky islands controlled by the ExtraHardMode plugin if you think vanilla survival is too easy.
Also, as I really dislike the combat update, I have installed OldCombatMechanics to remove some of the new 1.9 features while keeping the neat ones like end cities. I also installed ViaVersion, so you don’t need to worry about downgrading your client to play! (Keep in mind, you can’t use any 1.11+ features as it’s still a 1.10 server)