The music book Sounds Good On Ukulele contains a wide, genre-spanning selection of light to medium-heavy songs, which are perfectly suited for the ukulele due to the melody and a not too complex rhythm.
Title selection: Lambada (Kaoma), Creep (Radiohead), I Have A Dream (ABBA), Love Me Tender (Elvis Presley), Auld Lang Syne (Traditional), Hymn For The Weekend (Coldplay), Our Day Will Come (Amy Winehouse), Stay With Me (Sam Smith), Someone Like You (Adele).