What are the 3 types of linux and what are they most commonly referred to as?

Is it correct that the 3 types of linux are Fedora (Red Hat), openSUSE (Novell), Ubuntu (Canonical Ltd.)? And what do most people refer to these as? aka Red Hat or Fedora?What are the 3 types of linux and what are they most commonly referred to as?
Linux is the Kernel which all Linux distributions are built upon including the three you mention above

http://www.linux.org/info/index.html

http://distrowatch.com/



Fedora and OpenSUSE are intended for Home use

http://fedoraproject.org/

http://www.opensuse.org/en/



Red Hat and SUSE Linux are intended for Corporate use

http://www.redhat.com/

http://www.novell.com/linux/





LUg.
There are no "types" of linux. There are linux distributions, each with slightly different concept. See this: http://en.wikipedia.org/wiki/Linux_distr鈥?/a>



You can "categorize" them in a number of ways, eg. by package system, base distribution, etc., but there are definitely more than 3 of the even most "base" distros...What are the 3 types of linux and what are they most commonly referred to as?
There is only one type of Linux, since Linux is Linux, period. There are however various distributions, such as Fedora, openSUSE and Ubuntu which you have mentioned yourself, but also Slackware, Debian, CentOS, Mandriva, et cetera. See http://distrowatch.com for example for an overview of many of the available different Linux distributions. Ubuntu is the most popular Linux distribution out there really.
"What are the 3 types of linux"

Your declaration is wrong..

Red hat , Suse and Ubuntu is not type of linux even it is flavor of linux.

And SUSE is the best version.What are the 3 types of linux and what are they most commonly referred to as?
Ubuntu from canonical systems is the most frequently used Linux Distribution