>>17612 (OP)
In order of least technical proficiency required to most: Devuan, Gentoo, Slackware, Void.
Devuan is the comfy option. It has a massive package manager and you can easily install whatever you like. It has solid autoconfig, solid configuration GUIs if you need 'em, runs well and is stable. If you want a "it just works" distro, go Devuan.
Gentoo is the fast and more advanced option, that still has a very large support base because its more technically-inclined users do a good job of putting a lot of Gentoo-friendly material out there. It's usually the favorite distro of /tech/ and /g/ boards across the various imageboards.
Slackware is the oldschool option, if you like doing shit through the command-line all the time. It's more for people who want to do shit manually, and because it's actually designed to be used that way, it's more comfortable doing that when you're on Slackware. I do, and I like it.
Void is the more lightweight, DIY option, short of making your own distro. If you like Slackware but need something more barebones, simple, and even more manual, Void's your jam. It feels closer to running a BSD than Linux.