In article , Nicolaas Vroom
writes:

http://arxiv.org/abs/1603.00464

Title: Did LIGO detect dark matter?

The interesting part about the article is that nowhere they mention
the words baryonic versus nonbaryonic. Instead what they use are the
concepts dark matter (7x) versus luminous matter (3x).
This are typical a human based concepts and IMO should not be used.
In a certain sense because we can not see BH's, by definition
we should call BH: dark-matter-hole's

These days, dark-matter almost universally (pun, as always, intended)
means non-baryonic matter. Due to the no-hair theorem, we cannot say
whether these black holes formed from baryonic or non-baryonic matter;
at best, one might be able to provide circumstantial evidence for one or
the other of the two ideas, especially after more events will have been
observed.