I'm about to do something controversial:
https://www.gnu.org/philosophy/free-sw.en.html
Linking this article is controversial because people will know of my history with the FSF as an organisation, but I will say to you all what I've said to many others, many times before:
The four freedoms are absolute.
To be truly free, you *must* be able to freely use, study, modify and share the software, even commercially.
List of free software licenses:
https://www.gnu.org/licenses/license-list.en.html
FUTO says source first.
I say: freedom first