CC0 1.0 Universal

The collection creator states that all 166 included tracks were generated by them with Suno v5 while a premium member and dedicates them to the public domain under CC0 1.0.

CC0: https://creativecommons.org/publicdomain/zero/1.0/
Source repository and track catalog: https://github.com/btahir/open-lofi
Source release: https://github.com/btahir/open-lofi/releases/tag/v1.0.0