Early on reddit space posters filtering saves lots of filter work, since they keep spamming
Blackstone are old Lehman Brothers executives who made big bucks in the merger market and reinvested lots of it in New York real-estate
Blackrock is the multi trillion dollar investment funds company who have the voting rights o large parts of almost every company
She brings in her backing billionaire donations in return for influence
That is what trump means by "she is very capable"