Kenneth R. Ross is Professor of Theology and Dean of Postgraduate Studies at Zomba Theological University, and Extraordinary Professor at the University of Pretoria. Earlier he served as General Secretary of the Church of Scotland Board of World Mission and, since 2012, has been an adviser to the World Council of Churches. He has published extensively on many different aspects of World Christianity, including the highly successful EUP book, The Atlas of Global Christianity 1910-2010, co-edited with Todd M. Johnson. Since 2013, Ross and Johnson have collaborated as Series Editors of the EUP Edinburgh Companions to Global Christianity.

Grace Ji-Sun Kim was born in Korea, educated in Canada, and now teaches in the United States as Professor of Theology at Earlham School of Religion. She is the author or editor of 21 books, most recently, Invisible, Keeping Hope Alive and Intersectional Theology. She is the host of Madang podcast which is hosted by the Christian Century and is an ordained Presbyterian Church (USA) minister. More of her writing and work can be found on her blog site Loving Life. Her work can also be accessed at her substack: Loving Life.

Todd M. Johnson is Paul E. and Eva B. Toms Distinguished Professor of Mission and Global Christianity at Gordon-Conwell Theological Seminary, South Hamilton, MA. Johnson is Associate Faculty at Boston University's Institute for Culture, Religion and World Affairs leading a research project on international religious demography. He has published encyclopedias, atlases, databases, monographs, and scholarly articles on counting religionists around the world.