Hi Auricman,

In the traditional system of Reiki, Usui tradition founded by Mikao Usui, there are 3/4 degrees; 1st, 2nd and master practitioner/master teacher. Master practitioner/master teacher are generally taught as two separate levels. There are quite a few new traditions which have emerged as a result of Reiki masters channeling different energies into their traditional practice and assimilating different energy healing systems with Reiki. The list of new traditions seams to grow by the day, (look up attunements on ebay) however these are the main ones;

SEICHIM/SEICHEM/SEKHEM/SKHM/NEWLIFE REIKI SEICHEM

This tradition, originally called seichim, was created by Patrick Zeigler (lineage: Mikao Usui>Chujiro Hayashi>Hawayo Takata>Barbara Weber Ray), when he recieved a spontaneous initiation during a night spent in the Great Pyramid at Giza. He studied Reiki in the USA under Barbara Ray and used the Reiki attunement process to pass on Seichim. Seichim is the ancient egyptian word for ki, chi, prana etc.

THE RADIANCE TECHNIQUE/REAL REIKI

Barbara Ray (lineage: Mikao Usui>Chujiro Hayashi> Hawayo Takata), claims that Takata gave her 6 (some say) 7 Reiki attunements which she trade marked as the Radiance Technique, (originally called Real Reiki).

RAKU KEI REIKI

This system was deveped by Arthur Robertson and Iris Ishikuro (lineage: same as Barbara Ray), it incorporates the Johre or "white light symbol" and includes techniques such as breath of the fire dragon, hui yin breath and the kanji hand mudras (the first time they had been used inconnection with Reiki). This was also the first system to teach about the chakras in conjunction with Reiki.
I've got to get off the computer, more later....