Arch. Some of its users take this distro for granted a lot of times but it only goes downhill from here once you start looking at other distros.
Tumbleweed. Solid, Automated QA testing.
Chimera Linux. Security-related compilation flags go brrr. No systemd.
Maybe we'll see SerpentOS sometime before this decade ends but who knows.
On a side note. Aeon 1.0 if/when released, can't wait to see how it all turns out. Especially if they manage to integrate BTRFS snapshots with systemd-boot entries.
Wow. Great to see Chimera Linux on this list, though I do not think it is even out of Alpha yet.
Chimera Linux and Vanilla Linux are two of the distributions that I am most interested in at the moment.
I am also a huge fan of Arch but I typically install EndeavourOS these days. Out of the 80,000 or so Arch packages, EndeavourOS adds only about two dozen more but many of them are great. Installing yay by default is a great decision as well.