For those who, like me, are fascinated by the harmonic games of Poulence, I cant but recommend the Finale and Salve Regina from his opera Dialogues de Carmelites. Poulenc at his best (which is to say a lot!).
Poulenc is really brilliant. My choir sang "Les Tisserands" in quarantine style. Write this in the search: you will love it for sure! Corale Novarmonia - Les Tisserands (F. Poulenc)
The last theme you like so much is taken from this folksong. In Iceland this is a Christmas song. Here you can hear my old school choir sing ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RW58PeKpun0.html