ScrollTrigger's .batch Method
Documentation: https://greensock.com/docs/v3/Plugins...)
.batch() demo: https://codepen.io/GreenSock/pen/NWGP...
Intersection Observer demo: https://codepen.io/GreenSock/pen/jOWK...
Scroll position demo: https://codepen.io/GreenSock/pen/NWqE...
More complex demo: https://codepen.io/GreenSock/pen/zYrx...