I love Arch linux from the very beginning – and still, nowadays it pays as a respectful distribution with all pros- and cons- . Arch insipred dozens of developers to get this touch easier way, pass the installation process, etc.
All information below are more or less written by my humble opinion in my mind – there are possibilities of inaccuracies, bullying, prefering something, etc…
Manjaro
+
+
Extremely nice, quick and various distributions. Number one for many years. Suited for lazy developer/admin mind, nice colourful catalog of spins – XFCE, Gnome, KDE are officialy released, community is releasing Cinnamon, Deepin, Enlightenment, Fluxbox, LXDE, LXQT, MATE, Netbook, Openbox and PekWM. With this huge package of possibilities comes also one, very rare dividing – all Arch-based distributions are shipped systemd by default. As far as I had a chance to deal with some critical issues within systemd, I believe OpenRC is still better -> Manjaro was also distributed in OpenRC flavour. Not anymore, community is independent now and they became Artix Linux.
All-purpose distribution with fancy look and unlimited possibilities. Following newest trends (rolling distro) still gaining popularity. Manjaro deserves it!
My score = 90/100
Gallery@DistroWatch
Openbox arch-based, lightning speed distribution based on precise software installed out-of-box (for example Sublime Text, Terminator). I was looking for well-tuned system, providing all things similar to Manjaro, but focused on development/quick response. I found this distribution! No need to find anywhere else. Why I´m really enchanted by ArchLabs? Responsivness, conky, zshell, pre-installed software.
Overall minimalistic look is not a coincidence -> all developers are praising BunsenLabs linux as their idol. For those who don´t know distributions well – BunsenLabs are community-driven continuation of Crunchbang linux (legendary distribution for me).
My score = 90/100
Gallery@DistroWatch
XFCE-based distribution, providing good, fresh experience. Look-a-like Mac OS X is very popular in linux world (1, 2), anyway XFCE is still perfect window manager providing a lot of useful tools = for example KeePassXC in default installation is perfect idea!
My score = 80/100
Gallery@DistroWatch
Cinnamon-based distribution, providing also Galician and Catalan language support. Back in a past, when this distribution was named Cinnarch, it was extremely attractive choice. Nowadays they are pretty popular too! Thin blue line among all Arch-derivates – it is fast, familiar, Arch in the background.
My score = 80/100
Gallery@DistroWatch
(Chakra), 
(KaOS) There are hard times in our life… and we do something unexpected. Not a good one, more like weird, odd… I can admit these moments projected in my mind into something hispter-like, something like a colouring-pictures for children. Blamed.
KDE-based distributions are having many friends and supporters, indeed. Although it goes directly different way I like on window-manager and its functions, I was running these distributions for some months. If you ignore some blinking, popping-up windows, messages and bad feeling around your stomach (YES, working space ergonomy is something completely unknown to KDE) – everything is working fine!
I didn´t see similar contrast between frontend and backend (thanks God for Arch linux!).
My score = 70/100
Gallery@DistroWatch
Gallery@DistroWatch
There are plenty more distributions, few of them are target for some purpose = security (BlackArch), users eager to test completely new window manager (VeltOS), GNU fanatics (Parabola), mainstream lovers (Bluestar linux), KDE Plasma entusiasts (Netrunner linux), hardcore developers (Happy Hacking linux), BSD lovers (PacBSD).
-a-