How do they do Drag and Drop sorting of DOM elements?

Question

Frontend

I constantly stumble across different services on the same toilet. It's like they're using a ready-made library. How to implement it?
Here are examples from notion.so, elementor, grapesjs

spoiler

What do they use?

Answer 1

A variant of dragged list elements is here for example: rubaxa.github.io/Sortable