John the Revelator sees us in his vision just as much as he sees fantastical creatures and myriads of angels, all of us giving praise to the Lamb who alone is worthy.
These others do not get much attention. We do not know their names. We do not know their back stories. But they were there on Easter morning, and Luke wants his readers to know it.
Through His death and resurrection Jesus will create a new community of mini-suffering servants founded on the righteousness that the Suffering Servant won for them.