It is possible to restore playlists; they may also be found on archive.org and Common Crawl. But I hadn’t considered how necessary that would be. Regarding this specific case - unfortunately, neither Wayback nor Common Crawl has a single snapshot of the URL youtube.com/playlist?list=PL1RY5RYlgymo2ooWvReUmkwCCcGv0l_gF for the full list of 116 tracks.