Hi! This repository seems to be similar to EPITA.it (https://github.com/EpiDocs/epita.it / https://epita.it), is there anything that makes this list particularly different in some way?

Also, it would probably be nice to put a link to EPITA.it on the list :)

Hi again! In order for others to contribute, this repo needs a license, otherwise we legally can't do anything with it (can't reproduce it, modify it, adapt it...).

The choice of the license is legally entirely up to you (because you are the original author of the list). The awesome project recommends the CC0 license and I'd agree that it's a good, simple and permissive option. Just don't use a code license (MIT, GPL, MPL, Apache...) because those are only meant for code and don't work well for text.