Arch always turned me off with it's rolling release schedule, and I wasn't that impressed with pacman to be honest. I used to love Slack, but they lost their way trying to compete with Ubuntu and the like. I remember thinking how ridiculous it was for mplayer to have samba as a dependency, and the community saying a full install was the intended way to run Slack. I ran it as a minimalist without issues until they started wanting to compete in the desktop space.

The best successor I've found is Alpine. It's minimal and secure by design, has an excellent package manager (I much prefer apk to pacman or xbps, or apt and rpm for that matter), has stable and LTS releases while letting people who want to be rolling release do so by running edge. People think it's only for containers but it has every desktop package anyone would need, all up to date and well maintained. Their wiki isn't at Arch's level, but it's pretty damn good in its own right.