As has been pointed out already Manjaro/Arch and Gentoo distrobutions should be added to your list. There are four basic bases of linux distributions. Debian upon which Ubuntu/Mint/MX are base on RPM upon which Redhat/Fedora/Suse/Cent are based upon, Arch/Manjaro and Gentoo. All others are basically derivatives of those four groups. You should try OpenSuse because of Yast and familiarize yourself with how it works also. Good luck.
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