You could take a look at: https://github.com/ghomasHudson/Jellyfin-Auto-Collections/
It takes trakt, letterboxed, imdb, etc lists and turns them into Jellyfin collections, so you could probably feed it lists of trending movies and just run the script at an interval and have it update your collections.
Still can't get the collections to show on the front page without some weird plugin hackery, but it's a step in the right direction.
Using lidarr with the arr-extended scripts, soularr and slskd is the way. Add the music to your jellyfin server, stream with symfonium.