This broadening has included a longstanding interest in the comparative study of world religious traditions and involvement in a series of publications on interdisciplinary methodology and practice spanning the humanities and sciences as they relate to religion.

Volume six, Effing the Ineffable, explores how we use religious language to make sense of the most profound aspects of human experience and to plumb the mystical depths of reality, conceiving the inconceivable and saying the unsayable.

In 2016, Wildman founded the nonprofit Center for Mind and Culture, a non-profit research institute that uses computer modelling and data analytics to tackle complex social problems such as child trafficking, religious radicalization, proliferation of weapons of mass destruction, social integration of immigrants and refugees, and many other critical issues arising out of the “mind-culture nexus.” In 2022, Wildman founded Wildhouse Publishing, a "nonprofit independent publisher that exists to enliven the spiritual quests of people outside or on the margins of established religious and spiritual traditions".

In 2024, the Institute for the Biocultural Study of Religion, the Center for Mind and Culture, Wildhouse Publishing, and several other initiatives merged under an umbrella nonprofit organization, Just Horizons Alliance, which is dedicated to "fusing knowledge and wisdom for a more just and hopeful future.

"[6] Just Horizons Alliance conducts academic research, produces an AI ethics curriculum, publishes books on expansive spirituality for a secular and increasingly post-religious age, and catalyzes conversations among thought leaders.

Wildman is also known for pastoral research into ideological differences in Christian denominations, particularly the theoretical and practical meaning of the distinctions among liberal, evangelical, and moderate Protestants in the United States.

His work in this area has been influenced by such figures as Protestant theologians Friedrich Schleiermacher and Paul Tillich, comparative religion scholar Huston Smith, and philosophers John Searle and Robert Neville.