Manjaro is Arch based.

It is hard to find stats, Steam [1]:

> Arch: 11.20%

> Manjaro: 11.41%

GamingOnLinux [2]:

> Arch: 23.16%

> Manjaro: 15.68%

Servers... I've seen mostly Ubuntu, replaced by docker Alpine these days.

[1] https://store.steampowered.com/hwsurvey/Steam-Hardware-Softw...

[2] https://www.gamingonlinux.com/index.php?module=statistics&vi...