EMZETT.Arch Linux
In short: Arch Linux is a minimalist rolling-release distribution (since 2002) where you put your system together yourself.
In more detail: The motto “Keep it simple” means: little preinstalled, full control.
In Depth
Details
Packages with pacman, additional community packages in the AUR. The Arch Wiki is regarded as excellent documentation. Derivatives: Manjaro, EndeavourOS, SteamOS.