If you want a Linux distro with simple rollbacks and stable updates, ObsidianOS is worth a look.

https://itsfoss.com/obsidianos-review/

ObsidianOS Review: A New, Innovative Linux Distro Built Around A/B Partitioning

The idea to rollback via two root partitions is interesting. This is certainly not your regular rethemed Arch distro.

It's FOSS
@itsfoss they have a typo on their github front page ("all-based" instead of "arch-based"). Nitpick but not a great start, and doesn't give much confidence