Who are you thinking…
Who are you thinking of in particular?
It may just be that the church leaders you’ve been noticing lately have been from different denominations. The United Methodists have always had bishops; the Southern Baptists have never had them. Some Pentacostals (PCG) did change the title of their District and General Superintendents to District and General Bishops as of 2002, but the positions were already oversight positions; they just changed the name, apparently to make it sound more spiritual and less like secular upper management.
Anticopyright.