Introduction:
As we sail on the seas of world generation looking for suitable worlds for survival the idea of having all biomes in a single world has crossed my mind not even once. However, somehow this never seemed to work out in practice so far thus never been able to make a working all-in-one world generator. This time though I succeeded with a lot of effort. I've been working hard to find out the ideal values for humidity and temperature in each of the 70+ biomes to make the world seamlessly generate them but nah, didn't work. Thankfully, mc_da have already pre-determined these values in his Many More Biomes data pack for me to use so all I had to do is to remove the custom biomes and replace them with nether and end ones, tweak their values a bit and voilá. Also I've used assets from my previous projects such as the Floating Nether Islands to keep piglins and hoglins alive in the overworld and generate ores in nether biomes as well as my The End Overworld data pack to give unique water, sky, grass and foliage color to each end biome.

Features:

All and every biome generates quite seamlessly in the overworld with rather vanilla like structure generation
Custom sky, water, fog, foliage, grass colors in every nether/end biome
Custom particles in the mentioned otherworld biomes
Piglins and hoglins won't transform into their respective zombie forms in the overworld
Chorus trees grow in every end biome to make them look more natural
Ores of all sorts generate in every nether biome to make them suitable for settling in
Two editions and two variants. Regular one that barely if won't generate any additional structure in otherworld biomes. Plus edition, that generates much more things in both nether and end biomes such as mineshafts, mansions, pillager outposts etc. to spice up adventure a bit. Both Editions come in ghasts allowed and disallowed versions
The original end and nether dimensions are quite untouched in generation
Waves in oceans!

The regular edition and all other editions and versions are available from the files section.

Big shoutout and to Pmk for letting me incorporate his Waves data pack in my own. Thanks friend, your help is much appreciated!
I've also reached out to DurgerKing for permission to use his Huge Rivers data pack but I soon realized that my world generation settings pretty much ignore his biome settings, for mine seek equal distribution (more or less) in the shapes and sizes of biomes, rendering rivers pretty much useless thus I couldn't use his huge rivers pack anyway. Still, I thank him for his work for he made travelling by boat much more effective. Nice job!

Check out my other works too!

The End Overworld

Ocean Only / Water World

Floating Nether Islands

[World Generator] Everything | Every biome in one world!