Debian 2.x (don't remember exactly) was my first attempt. But I don't actually count that because after annoying driver troubles (networking and mouse) and having to recompile the kernel multiple times I unfortunately lost interest.
Tried again with Debian 8 on my laptop and stuck with it until I moved 100% Linux just a couple of years ago thanks to Valve/Proton.
I started with some UMSDOS-based "full X11 desktop in 5 floppies" distro on a 486, then went through Slackware, RedHat 5 with glibc breakage, actually bought a SuSE boxed set in the 7.x era, mostly stuck with Slackware unril I realized I wanted stuff like Steam and perhaps some degree of dependency resolution is nice. Bounced off of Arch (the AUR is a terrible concept IMO) and ended up on Void, which gives me Slackware-like vibes, but a little more built for broadband instead of CD images. Been trying Debian Sid latrly, just because I put it on my new laptop and I figured I'd go consistent, but I'm not sure I'm sold. Everything works, but even for an "unstable", the packages are dated and I dislike systemd on principle.
I run Arch but don't install anything from the AUR unless absolutely necessary (or if it is dead simple enough for me to understand). I find the pacman-only experience makes a great stable low effort stable PC with all the latest bells and whistles. System updates on the weekend, once a week. No problems.
Interesting. It looks like there's a couple criteria to get something into the Extra repository, but the primary one looks to be a ready and willing package maintainer. Sounds like that hasn't happened yet for fvwm.
Endeavour has basically all the pros of Arch without the challenges. Most times I just want to do some gaming with minimal fuss so for me it's perfect. I can still tinker when I want to.
I think they've standardized on KDE Plasma and Wayland (though I still recommend X11 for stability) as the default but last I knew they offered current builds for almost every DE, which again just saves hassle if you prefer another.
I used Manjaro previously but it seemed too disconnected from Arch / the AUR, so it felt like a crapshoot on whether certain package versions would work or whether the Arch wiki was relevant.
I'm using Arch Linux as my daily driver, my previous distro was Void for quite a while. After Void I tried out Fedora but I hated . Right now I'm testing Guix on a virtual machine too
I've tested Ubuntu (before they switched to the Unity interface), played a lot around Linux Mint, including dual booting. I ultimately settled on Manjaro. I do still occasionally test out other distros with virtual machines, such as Debian, Trisquel, and Zorin.
In the beginning, i used mint, then i used arch for a while, now im chilling comfortably with a dual boot of bazzite/arch. bazzite for the gaming setup, arch for the work setup.