Big Shoulders, Barlow and JetBrains Mono are licensed under the SIL Open Font License, Version 1.1.
Full text: https://openfontlicense.org/open-font-license-official-text/
Copyright notices: Big Shoulders — The Big Shoulders Project Authors; Barlow — The Barlow Project Authors (Jeremy Tribby); JetBrains Mono — The JetBrains Mono Project Authors.