The names of this type can be: Mahjong Master, Mahjong Peak, Mahjong Craze.
1. Mahjong Master: This name highlights that this is a group of professional mahjong players and expresses the skills and experience of the group members.
2. Mahjong Peak: This name gives people a sense of height and peak, implying that this group is the top figure in the field of Mahjong.
3. Mahjong craze: The name conveys that this is a passionate group of mahjong enthusiasts. The members are passionate about mahjong and are happy to share this fun.