Again, no more than baryonic matter, which is demonstrably not all wrapped up in black holes (and probably much less, though bear in mind this is all pretty spe

Again, no more than baryonic matter, which is demonstrably not all wrapped up in black holes (and probably much less, though bear in mind this is all pretty speculative). Of course any dark matter that happens to be headed straight for a black hole will go in, no problem. Broadly there are a lot more variables in black hole formation than just self-interaction. Remember it's possible in principle for photons to form a black hole, if you get them to converge just right, but that doesn't mean it's common or at all relevant on a cosmological scale.