What religion is being referenced in the conversation in Kima Jones's poem "Homegoing, A.D.," and what details are included that lead to this conclusion?

A conversion by some of the family members at the speaker's grandfather's funeral to the Islam religion is referenced. The reader knows that Islam is the religion being referred to due to Leroy's comment that no one eats pork anymore, all of the women wear headdresses, and that many of the members of the family have changed their names.