Baba Bulleh Shah is not known to be a Gursikh. He was a great seeker of Allah but without true Murshid, one cannot attain Vaheguru. His known Murshid was Sayeen Inayat Shah of Iraaeen background. As Bulleh Shah became thirsty for Allah, he started looking for a Murshid and soon he heard about Saayeen Inayat Shah. Sayeen jee was a farmer and at the time, Bulleh Shah came to meet him, he was working on the paneeri of rice. Ones who have seen paneeri of rice, know that it is grown in field that is irrigated intensively. Bulleh Shah told him the purpose of his visit. Saayeen jee replied
ਓਇ ਬੁਲਿਆ, ਰੱਬ ਦਾ ਕੀ ਪਾਉਣਾ। ਇਧਰੋ ਪੁੱਟਣਾ ਤੇ ਉਧਰ ਲਾਉਣਾ।
(What is so difficult about attaining Rabb, O Bulliya? It is as simple as plucking from here and planting there.)
While he said this famous Bachan, he plucked out one small plant of rice and planted it at another place.
Great holy man but he was not a Gursikh. If you read his Baani, you get the impression that he must have read Gurbani at some point. From what I have noticed while reading his beautiful compositions, he seems to be affected by Gurbani and has even used the language of Gurbani e.g. Dasam Duaar, Anhad Shabad, Jagdeesh etc.
Kulbir Singh