The interpretation timeline
Ezekiel 1:10 Douay-Rheims

And as for the likeness of their faces: there was the face of a man, and the face of a lion on the right side of all the four: and the face of an ox, on the left side of all the four: and the face of an eagle over all the four.

A.D. 202 – 1871 10 witnesses

Patristic

before A.D. 750
202
A.D.
Irenaeus Patristic
c. A.D. 130–202
“For the cherubim, too, were four-faced, and their faces were images of the dispensation of the Son of God. For, [as the Scripture] says, "The first living creature was like a lion," symbolizing His effectual working, His leadership, and royal power; the second [living creature] was like a calf, signifying [His] sacrificial and sacerdotal order; but "the third had, as it were, the face as of a man,"-an evident description of His advent as a human being; "the fourth was like a flying eagle," pointing out the gift of the Spirit hovering with His wings over the Church. And therefore the Gospels are in accord with these things, among which Christ Jesus is seated. For that according to John relates His original, effectual, and glorious generation from the Father, thus declaring, "In the beginning was the Word, and the Word was with God, and the Word was God." Also, "all things were made by Him, and without Him was nothing made." For this reason, too, is that Gospel full of all confidence, for such is His person. But that according to Luke, taking up [His] priestly character, commenced with Zacharias the priest offering sacrifice to God. For now was made ready the fatted calf, about to be immolated for the finding again of the younger son. Matthew, again, relates His generation as a man, saying, "The book of the generation of Jesus Christ, the son of David, the son of Abraham;" and also, "The birth of Jesus Christ was on this wise." This, then, is the Gospel of His humanity; for which reason it is, too, that [the character of] a humble and meek man is kept up through the whole Gospel. Mark, on the other hand, commences with [a reference to] the prophetical spirit coming down from on high to men, saying, "The beginning of the Gospel of Jesus Christ, as it is written in Esaias the prophet,"-pointing to the winged aspect of the Gospel; and on this account he made a compendious and cursory narrative, for such is the prophetical character.”
Source
235
A.D.
Hippolytus of Rome Patristic
c. A.D. 170–235
“This is also how Ezekiel depicts those animals that praise God. In the four figures of the four Evangelists he demonstrates the glory of the Father and draws attention to his workings, in whom all four points of the compass are fulfilled. "The one animal," he says, "had four figures"; because each figure is a Gospel, it appears in a fourfold fashion. The first figure, he says, which was like an ox, indicates the priestly glory of Jesus, which Luke depicts. The second, which was like a lion, indicates the leadership and regal nature of the lion "of the tribe of Judah"; this is what Matthew depicts. The third was like a human being and shows the Son's capacity for suffering and the lowly nature of humanity; this is what Mark shows. However, the fourth, the eagle, teaches the spiritual secret of his power and might who flies up to the Father's heaven; this is John's message.”
Source
386
A.D.
Cyril of Jerusalem Patristic
A.D. 313–386
“After this description of the prophet, we still cannot comprehend as we read. But if we cannot comprehend the throne that he has described, how will we be able to comprehend him who sits on it, the invisible and ineffable God? It is impossible to examine closely the nature of God, but for his works, which we see, we can offer him praise and glory.”
Source
397
A.D.
Ambrose of Milan Patristic
A.D. 339–397
“Now, in every sort of person, the astute Greeks have said, are to be found logisticon, thymeticon, epithymeticon, dioraticon; in Latin these are prudence, fortitude, temperance and justice. Prudence concerns the human reason. Fortitude bestows a certain power of fierce strength and contempt for death. Temperance, when it contemplates the heavenly mysteries and is retrained by consecrated chastity, cares nothing for bodily pleasures. And justice, from a certain high position of revelation, sees and searches out anything produced for others rather than itself; justice does not examine its own conveniences as much as what benefits society. It is appropriate that the soul that has acted with justice is symbolized by an eagle. It should fly away from earthly things and be totally intent on the divine mystery of the sublime resurrection. It struggles for and attains glory insofar as it is impartial.”
Source
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“It appears to me that those who have taken the lion to point to Matthew, the man to Mark, the ox to Luke and the eagle to John have made a more reasonable application of the figures than those who have assigned the man to Matthew, the eagle to Mark and the lion to John. For in forming their particular idea of the matter, they have chosen to keep in view simply the beginnings of the book, and not the full design of the several Evangelists in its completeness, which was the matter that should, above all, have been thoroughly examined. For surely it is with much greater propriety that the Evangelist who has brought to our attention most particularly the kingly character of Christ should be taken as being represented by the lion.… That Luke is intended under the figure of the calf, in reference to the sacrifice made by the priest, has been doubted by neither of the two sets of interpreters.… In this way it further follows that Mark, who has set himself neither to give account of the royal lineage nor to expound anything distinctive of the priesthood … appears to be indicated simply under the figure of the man among those four living creatures.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“As for the likeness of their faces, they four had the face of a man,.... For these living creatures are men, redeemed from among men by the blood of Christ; their business lies with men, to preach the Gospel to them: and they should be humane, kind, and tender in their behaviour towards them; wounded consciences of weak believers, distressed and disconsolate souls, requiring such usage; and they should be men in understanding, have a large knowledge of the Scriptures, of the truths of the Gospel, and of Jesus Christ, since their work is to feed men with knowledge and understanding; and should act the manly part, quit themselves like men in defence of the Gospel, and the truths of it; and the face of a lion on the right side; denoting the strength of Gospel ministers, the lion being the strongest among beasts, Pro 30:30; and they have need to be strong in the grace of Christ, and in the power of his might, to do the several parts of their work; to endure hardness as good soldiers of Christ; to wrestle with principalities and powers, and to bear the infirmities of the weak: and also their courage and fortitude of mind; their boldness in preaching the Gospel of Christ, not fearing the faces of men, nor their revilings; see Pro 28:1; and they four had the face of an ox on the left side; expressive of the patience of Gospel ministers in bearing the yoke that is upon them, not only of the ministry, but of the weaknesses of saints, and the reproaches and indignities of the wicked; and in instructing those that oppose themselves, and in waiting the issue of their ministry: and also of their laboriousness in their ministrations; particularly in treading out the corn of the word, for the subsistence of the saints: see Co1 9:9; they four also had the face of an eagle; showing their strong and clear sight of the Gospel, and the mysteries of it; the eagle having so strong an eye, that it is able to look full and steadfastly upon the sun; and their diligence in searching into the deep things of God, and particularly to find out where the carcass is, a crucified Christ, to feed upon themselves, and to direct others to it likewise. It seems as if these four living creatures had four distinct heads, as well as faces, and that the position of them was in this manner; the face of a man before; the face of a lion on the right side; the face of an ox on the left; and the face of an eagle behind, These four are the most excellent of creatures. The Talmudists have a saying, "there are four that are proud (or excel) in the world; the lion among beasts; the ox among cattle; the eagle among birds; and man, whom God has exalted above all, for he rules over all (o).'' (o) Apud Schindler. Lex. Pentaglott, p. 267.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“As for the likeness of their faces - There was but one body to each of those compound animals: but each body had four faces; the face of a man and of a lion on the right side; the face of an ox and an eagle on the left side. Many of these compound images appear in the Asiatic idols. Many are now before me: some with the head and feet of a monkey, with the body, arms, and legs of a man. Others with the head of the dog; body, arms, and legs human. Some with the head of an ape; all the rest human. Some with one head and eight arms; others with six heads or faces, with twelve arms. The head of a lion and the head of a cock often appear; and some with the head of a cock, the whole body human, and the legs terminating in snakes. All these were symbolical, and each had its own appropriate meaning. Those in the text had theirs also, could we but find it out.”
Source
1849
A.D.
1774–1849
“Over. This is not specified in Hebrew, Chaldean, Septuagint, or St. Jerome. (Calmet) — “The face of an eagle for all the four.” It must have been above or behind the man, as the situation of the other two faces is here determined, ver. 6. (Haydock)”
1863
A.D.
1796–1863
“It was customary with tho Oriental writers to use symbolic figures, with a view to convey instruction. In tho cherubs were combined the forms of various animals. The lion, king of beasts, the eagle of birds, with the ox and man, the noblest animal, were represented. In the vision of Esekiel these images were united in each cherub; whilst in the vision presented to St. John, they were separate. Apoc. 47. The human face and form prevailed.”
Source
1871
A.D.
1871
“they . . . had the face of a man--namely, in front. The human face was the primary and prominent one and the fundamental part of the composite whole. On its right was the lion's face; on the left, the ox's (called "cherub," Eze 10:14); at the back from above was the eagle's.”
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.