The same goes with every religion including Buddhism.
I have trouble answering the question of what kind of Buddhist I am. I have experienced a bit of various types. Many years ago a guy I was dating at the time was a practicing member of Soka Gakkai USA, and we would chat together sometimes. This is the same variety of Buddhism practiced by Tina Turner.
More recently another guy I dated in Colorado regularly goes on Vipassana retreats where attendees go for days without speaking, reading anything, or even making eye contact. The meditant is deeply submerged in meditation and him/herself.
There are of course two main branches of Buddhism: Theravada and Mahayana. Tibetan/Vajrayana Buddhism is a third major branch that some classify as a type of Mahayana.
Frankly, I am not educated enough to know the clear differences between them. The different branches share much in common and Buddhist retreat centers may have monks and lay practitioners of various types working together. Here though is my emerging knowledge of this subject. If any readers can share more light on the branches, I would be very grateful!
- Theravada (School of the Elders) is the oldest continuous Buddhist tradition. It grew out of the earliest Indian Buddhist traditions and preserved many early Buddhist writings in the language of Pali. Theravada flourished originally on the island of Sri Lanka before spreading to Thailand and Southeast Asia. All Buddhists look to the Pali writings as authentic. The Dalai Lama, a Tibetan Buddhist, has said that Buddhists should first look to understand Theravada Buddhism even if they belong to other branches. Theravada Buddhists focus on reaching nirvana and thus becoming an Arhat but believe in this time period most beings cannot achieve Buddhahood. I think of Theravada as Buddhism's Roman Catholicism/Eastern Orthodoxy.
- Mahayana (Greater Vehicle) is the Buddhism more common in East Asia (China, Korea, and Japan). Zen Buddhism comes from this tradition. Mahayana has a definite mystical quality to it. There is an emphasis in Mahayana teachings on emptiness and the belief that all beings can reach Buddhahood. In ways I think of Mahayana as Buddhism's Protestantism because there are elements in this tradition of breaking free of the need for priesthoods and a focus on individuals achieving Buddhahood directly.
- Vajrayana (Diamond Vehicle) or Tibetan Buddhism is a branch of Mahayana Buddhism that flourishes among Tibetans and Mongolians. The Dalai Lama is one of this branch's key priests. There are others too such as the Panchen Lama. This school appears to emphasize various tantric practices (not sex!) to speed up achieving Buddhahood. Thus, a person seeking Buddhahood as a way to better help others may identify -according to Wikipedia- with the path as much as the results. So, perhaps you aren't a Buddha today but you can practice Buddha actions in speech, thought, and action today. It is my understanding that Tibetan Buddhism also incorporates elements of the pre-Buddhism Bon religion originally practiced among Tibetans.
Since I currently do not belong to any sangha or congregation, I do not have a clear line of teachings from a single school that I follow. Theravada's stripped down Buddhist basics appeals to me as does Mahayana's mystical practices and Tibetan's practical guides to daily living. I guess I'll see where the road takes me.