Modification called a Cherished Worlds 1.16.5-1.16.4 allows you to mark all your favorite worlds, an asterisk will appear to the left of the world name, it will always appear at the top of the list, and you can’t delete them without removing this label.
This small GUI Tweak will add a lot of convenience if you are playing on many worlds, but want to highlight a few basic worlds and keep it from moving down.
How to install Cherished Worlds
- Download and install Forge or Fabric
- Download mod
- Unzip it and copy to C:\Users\User_Name\AppData\ Roaming\.minecraft\mods