New Minecraft features in older versions. Mod Name?

When I was tracking the Minecraft creator Chaosflo44 a couple of years ago, this mods had some of the features that came with it, such as versions like. 1.12 in the 1.7. I would like to know the name of this mod. It could also be that he has programmed this mod himself because he would definitely be able to do so.

There's not one mod that does that. There are different mods that bring different things from newer versions in old versions.

Quark e.g. Adds some of newer versions to old versions. Colored beds etc.

Botania brought Prismarine in 1.7.

But it's not just features and blocks from new versions but also own content that the mods bring with them.