GitHub - menzerath/spigot-tab-list-per-world: Minecraft (Bukkit/Spigot) Plugin: Tab-List will only show those Players, who are in the same World like you.
GitHub - thekeenant/tabbed: Minecraft library for manipulating the tablist per player.
TAB [1.5.x - 1.19.2] on Polymart
A Concept for Higher Performance Single-World Servers without a total rewrite (subservers, shared world) : r/admincraft