Not an expert but usually F/OSS licenses are mainly about:

- Patent grants (either grants patent-use or doesn't)

- Copyleft (should modifications be open sourced. ex: AGPL is the strongest FOSS copyleft, whilst SSPL builds on it to make it even more stronger)

- Copyright (owners who are licensing the code)

- Warranty and Liability

- Terms of use (ex: FOSS licenses don't enforce restrictions on commercial use like CommonsClause does)

Ref: https://choosealicense.com/