Off topic, but I saw an article the other day with a theory that black holes are dark matter stars, and that the event horizon is not a sphere but toriodial, the physicist making the claim asserts this gives a simpler explanation for the particle jets observed; as matter and light falls toward the torus it orbits the event horizon through the doughnut hole and some is ejected perpendicular to the plane of the torus.
There is also a claim that the interior of the event horizon is a different phase of space time, constituted of condensed dark matter, which means that there can be a transition of some matter/light back through the event horizon making the black hole actually a very dark grey doughnut.

Not provable at the moment, and it seems the theory isn't well received, but hopefully some observations can clear it up.