Worth noting that there's also MicroOS Desktop [1], basically like Fedora Silverblue but implemented using btrfs subvolumes and snapshots instead of OSTree.
I've been running a homelab cluster on Kubic for about a month. My favourite part is definitely waking up in the morning to a new kernel version or patch k8s upgrade.
[1]https://dariofaggioli.wordpress.com/2020/10/16/opensuse-micr...