ChromeOS Flex
ChromeOS Flex, developed by Google, is a free and lightweight Linux distribution based on Gentoo-derived ChromeOS. Unlike ChromeOS which is designed specifically for Chromebook computers, ChromeOS Flex can be installed on most x86_64 devices with a AMD or Intel processors, offering a Chromebook-like experience.
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pearOS
pearOS is an Arch-based desktop Linux distribution which features a macOS-like theme and icons on top of the KDE Plasma desktop. Some of the distribution's features include a custom system installer called pearOS Installer, a pearOS welcome application, and the GNOME Files file manager.