Buddhism does not have the following concepts:
- Atman
- Brahman
- Purusha
The Buddhist view is that everything being is dependently arisen than having a soul. Also, realisation and enlightenment in Buddhism do not have anything to do with the Brahma or Brahmic knowledge but the understanding of reality as it is.
Also in Buddhsim, the goal is to know reality as it is than to know oneself.
Also, see the following: