I think you will find that many of the larger black holes are black, but not singularities.

CrashCourse:  Binary and Multiple Stars: Crash Course Astronomy #34 at https://www.youtube.com/watch?v=pIFiCLhJmig

I think you will find that many of the larger black holes are black, but not singularities. Look at the complex orbits of the stars around our own central black hole. They are complex, intricate, interweaving, but not chaotic and explosive. There are lots of black holes, white dwarfs and other things that can orbit a central location. And inside might well be many distinct and whole stars. If you check the whole of the big bang region contains enough mass to be black from the outside. Systems with many stars can be of many kinds, and some of them can trap light, but not gravity. And we can scan using gravity now. Richard Collins, The Internet Foundation