Historically, these men were powerhouses. Dhrishtadyumna was the commander-in-chief of the Pandava army; Shikhandi was the pivotal figure destined to bring down Bhishma; Satyaki was Krishna's own kinsman and a warrior of immense skill. By listing them, Sanjaya is informing the blind King Dhritarashtra that the Pandavas are not alone; they are supported by a 'dream team' of moral and military giants.