In Japan Reiki is called Usui Reiki Ryoho. And to me all Reiki is essentially the same in essence, but here is my particular lineage:
My main teacher for Reiki took her First and Second Degree Reiki from a woman with direct lineage to Takata’s grandaughter (and thus Usui Reiki Ryoho) and then she took her Masters and Teachers courses in Germany from a lineage that cannot be traced i.e. what is known as a ‘non-tradititional’ lingeage. This non-traditional lineage is some times referred to as Liberty Reiki. I consider this my main lineage so for the most part it’s non-traditional, not directly traceable, but Reiki is Reiki. My primary teacher was Marnie Vincolisi.
I’ve also taken Reiki I/II with William Lee Rand, Usui Reiki teacher. And Reiki Masters/Teachers workshop with Traci Hagie that is traditional Usui lineage (Usui Reiki Ryoho). My lineage is technically traceable to traditional Reiki though I do follow the teaching format of my first teacher because it resonated with me.
The fully traceable lineage for Master/Teacher goes like this:
Sara Beth Shepard
Laurie Grant (I actually took two weekend Arch Energy Healing intensives with Laurie)
Virginia Samdahl and Iris Ishikuru