Will the people of Paradise call each other by their worldly names, and how will they recognize each other when they are similar in creation?

Lineages and names will remain until the Afterlife. The denial of lineages on the Day of Judgment means the cessation of their worldly effects, such as boasting, not the denial of their reality, as evidenced by a person fleeing from their relatives. As for the persistence of names, it is indicated by the hadith of Al-Baraa, and the fact that people will be of the same age does not prevent them from recognizing one another.