Font - Cinzel
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
https://fonts.google.com/specimen/Cinzel/license

Font - Montserrat
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
https://fonts.google.com/specimen/Montserrat/license

Google Charts
Apache License 2.0
https://github.com/GoogleWebComponents/google-chart/blob/main/LICENSE

More information on licenses for third party tools and libraries can be found here:
https://github.com/AyronK/arpg-timeline/blob/main/README.md#License