MocaccinoOS
MocaccinoOS is an independently-developed Linux distribution that has its origins in source-based Gentoo Linux and Sabayon Linux. It uses a custom-built package manager called "Luet", which acts as a front-end for container-based software.
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Synex
Synex is a GNU/Linux distribution based on Debian's "Stable" branch, developed with the official Debian Live Build tool. It offers four separate desktop options with GNOME, LXDE, KDE Plasma and Xfce, all of which are composed of a rather frugal set of applications in its default state, without any development tools or offices suites.