But most of those were extremely shitty or niche and got abandoned. Except Mandrake. That one was pretty good but I think I remember they were constantly having funding issues.
Mandrake was to Redhat as Ubuntu is to Debian now.
Mandrake, Suse, Corel, Red Hat, Turbo, Conectiva, PLD, Caldera, Rock, Coyote... that's just the more well known distros, there were dozens at that point already.