Augustine of Hippo

Because that life eternal shall be equal to all the saints, a denarius is given to all; but forasmuch as in that life eternal the light of merits shall shine diversely, there are with the Father many mansions; so that under this same denarius bestowed unequally one shall not live longer than another, but in the many mansions one shall shine with more splendour than another.

Catena Aurea by Aquinas ↗

Gregory the Dialogist

How many fathers were there before the law, how many under the law, and yet those who were called at the Lord's coming arrived at the kingdom of heaven without any delay. Therefore those who labored until the eleventh hour receive the same denarius that those who labored from the first hour awaited with all their desire, because those who came to the Lord at the end of the world obtained an equal reward of eternal life with those who had been called from the beginning of the world.

Forty Gospel Homilies, Homily 19 ↗

Thomas Aquinas

Then follows the execution: when they came who had come about the eleventh hour, whether Christians, or men in decrepit age, they received each a denarius.

Commentary on Matthew ↗