Sikhism, one of the youngest religions in the world, originated in South Asia. Inevitably, the majority of its followers are of South Asian descent. It is based on the founder, Guru Nanak’s teachings, and of the nine Gurus that succeeded him. As a religion, it advocates peace, love, and tolerance, and lays a strong emphasis on service. Sikhs believe in a Supreme Being – one who is shapeless, timeless and invisible. They reject idolatry and instead feel that
You are biased here because naam japna is not a deviance in Hinduism and the very word guru is a Sanskrit word.in Hinduism or Santana dhamra (which is not a religion) the god manifests itself or himself (because god has no gender) in different form and in Dualism(Advaita) we worship idel to give a gratitude to this existence because we are also the part existence but we we go in non duality (Advaita vadanta) we then we go inside and be aware about everything and meditate upon the self until one realise there is no difference between the god and the one individual. guru nanak ji not created any religion his followers collected his teachings and created a religion. Guru nanak dev representing the core philosophy of Advaita vadanta.
Naam japna is not a deviance from Hinduism: https://en.wikipedia.org/wiki/Japa
You are biased here because naam japna is not a deviance in Hinduism and the very word guru is a Sanskrit word.in Hinduism or Santana dhamra (which is not a religion) the god manifests itself or himself (because god has no gender) in different form and in Dualism(Advaita) we worship idel to give a gratitude to this existence because we are also the part existence but we we go in non duality (Advaita vadanta) we then we go inside and be aware about everything and meditate upon the self until one realise there is no difference between the god and the one individual. guru nanak ji not created any religion his followers collected his teachings and created a religion. Guru nanak dev representing the core philosophy of Advaita vadanta.