The whole *arr shebang I see 🏴☠️ :-)
I quite like the clean UI of proxmox, and I guess most of these are docker/podman containers with some LXC ones too. It's really clean I like it!
I take it your Synology is on another device, and this is your main Jellyfin server which network mounts the synology when needed?
I tend to use DietPi for this kind of thing, which touches baremetal and uses no containers whatsoever, but it's aimed at small SBCs than miniPCs