Aether Isles

Aether Isles starts you off with the classic SkyBlock experience on a default island. From there you have the ability to find other islands based on different biomes, including jungle, birch forest, and more!

You are also able to travel to the End by finding a portal on one of the islands, and you can find a broken Nether portal on another to provide access to the Nether. 

It is also possible to, by the help of loot chests and the islands' resources, to get your hands on every type of crop and wood type (as of 1.18).