react-scroll-parallax-examples | React parallax examples using | Animation library

I have a real nice scene in SVG consisting of some clouds and a landscape, sort of like this:

Now I would like to work it in React.js and make it so you can scroll vertically through the scene, and it has sort of parallax effects. That is, say you just see this as your viewport initially.

As you scroll down, it reveals more of the vertical scene. BUT, it doesn't just scroll down the image like normal. Let's say the moon stays in view for a few "pages" of scrolling, only very slightly animating up. Then boom you reach a certain point and the moon quickly scrolls out of view and you are in the mountains. It scrolls slowly through the mountains and then boom quickly to the lake. Each time it "scrolls slowly through" something, that is room for some content to be overlaid. However long the content is for each "part" dictates how much slow scrolling there will be through that part of the scene. So even though the moon might be let's say 500px, there might be 3000px worth of content, so it should scroll let's say 200px of the moon SVG while in the moon phase, as it scrolls through 3000px of the content in front. Then it scrolls the remaining 300px plus some more perhaps to get past the moon, and then scrolls slowly through the mountains, with let's say 10000px of content. Etc.

Then, when in the mountains, each layer of the mountains "in the distance" moves slightly slower than the one in front. That sort of stuff.

The question is, how do I divide up the UI components / SVG / code so as to create these effects? Where I'm at now is, I have an SVG which has tons of transform="matrix(...)" all through each element, like this: