A granthi
Generally speaking the term Prophets may not be suitable for usage in the religions like Sikhism, Buddhism or Jainism because of what the term represent . But in Sikh usage the equivalent would be "Guru", which is the same as for Buddhism and Jainism. In Hinduism both Prophets and Guru are present.
The Chicken
The name given to Sikh's sacred scripture is 'Sunskrit.' It is the language in which the Guru Granth Sahib Ji (the holy book) was written in by the 10 Gurus.
Tirthenkaras and/or Jinas.
Generally, a 'Follower of Sikhism' is called a Sikh, or they may be called Khalsa (meaning "Sovereign"). Meanwhile, the last name, Singh, meaning lion, is given to baptized Sikh males, and the last name Kaur, meaning princess/lioness, is given to baptized Sikh females.
Sikh's Sikh's
Yes. Nijjar is jatt Sikh name
Yes. Pannu is a Punjabi Sikh Jatt name.
The Sikh community is known as the Khalsa Panth.
He is a Sikh. But he is a shame to the sikh community because he hides his sikh name(kamaljit singh jhooti) for a western name. His honest religion is sell out.
A Sikh naming ceremony for a child is simply for naming. What happens in Sikh services is that the reader of the Sikh Holy Book flips to a random page and reads the hymn for the day. That happens regardless. If someone has a child to be named, they listen to the first letter of the hymn and will name their child based on that letter. Often they will discuss it there and tell one of the administrators and an announcement is made to the congregation. Some will go home and think about it. There are 35 letters in the Gurmukhi script, the alphabet of the Sikh people (it was created by one of the Sikh prophets to include the many languages the hymns of the Sikh Holy Book were composed in). A naming ceremony for an adult usually occurs if he/she has chosen to be baptized (generally adults get baptized for they are old enough to make the commitments required) and doesn't have a Sikh name or never got his/her name Sikh name chosen in the manner above. I don't know too much about christenings. You can still be a Sikh even if you haven't had this naming ceremony as a child.
Gurus are important to Sikhs are they were the prophets. We believe that they were sent by God to teach us about life.For spiritual upliftments, purposes. Think of it as a father and son relation.