I give you this information to help you understand the basis of my opinions. All these distributions are easy to install and understand. They were all designed to install from floppy disk, and packages were in floppy-sized chunks. At one time, I could successfully install Slackware without even having a monitor on the computer. There are, however, costs associated with this simplicity.
Software is saved in compressed tar files.
There is no information within the distribution that shows how files interrelate, no dependencies and no good path for upgrades. Yggdrasil Yggdrasil offered the most promise with a GUI-based configuration. When I first looked at Marc Ewing's creation, I was impressed. It had some GUI-based configuration tools and showed a lot of promise. Over the years, Red Hat has continued to evolve and is easy to install and configure.