Complex sentence: In Virginia, there is the Sikh Foundation of Virginia, most members of which are Punjabi Jatt Sikhs, Sikh Rajputs, and Sikh Ramgarhias.
Split into simpler sentences: In Virginia, there is the Sikh Foundation of Virginia. Most of them are Punjabi Jatt Sikhs, Sikh Rajputs, and Sikh Ramgarhias.