There can only be one!
... unless someone decides to gather all the Nighthawks and make them some sort of group or franchise.
Nighthawks Unlimited, if you will.

... actually, has there been any sign of Deadly Nightshade since Secret Empire?


This is the same universe where the very white Nick Fury can have a son who looks like Samuel L. Jackson and no-one bats an eyelash at that one.
And original flavour Nighthawk was a Defender. They got up to some weird stuff.
So maybe the heroes of the Marvel universe think it's something like that.