RIchelle, Matthieu. "La pierre angulaire d'Esaïe 28,16 à la lumière de l'oracle contre l'Egypte (Es 28)." ZAW 123 (2011): 437-40.
According to a sense of the word neglected by the exegetes but attested in Is 19,13, the “cornerstone” from Is 28,16 might designate an ideal “leader” that Yahweh will install instead of, or in contrast with, the officials who are criticized in the surrounding verses. This would explain the traditions which personify the “cornerstone”, from the Targum to the New Testament.