In the Liturgia Horarum, you have Legifer prudens for Lauds. This was composed by Dom Anselmo Lentini and published (1954) in the periodical Latinitas. Lentini, a very considerable hymnographer, commented that it fitted the munus sociale of S Benedict, on account of which he was made principal Patron of all Europe by S Paul VI.
Also in LH, at Vespers, there is Inter aeternas, by Peter the Venerable, Abbot of Cluny, who died in 1156. It is shortened, partly by the omission of some miracles.
In the original draft of the Hymnarium for the Liturgia Horarum, Fratres alacri had been suggested for the Office of Readings. It was composed by Paul the Deacon, who died in 799.
In my Diurnale Monasticum, Inter aeternas is the hymn at Lauds; at Vespers there is Laudibus cives. I find this hymn very appealing because of the clues scattered around its text. For example, it tells us that the youth ful S Benedict left the penates of his fatherland; that he laid low both the nemus of Venus and the bronze statue of Clarius. The God of Clarus was, of course, Apollo ... I wonder if penates and Clarius would have featured in a hymn written before the classicising movement of the seventeenth century.
But Urban VIII and his circle cannot claim the credit for Laudibus cives. It was written by Jean-Baptiste de Santeuil (1630-1697), who, in the style of the times referred to himself as Santolius Victorinus, because he was a Canon Regular of the Monastery of S Victor.
He made generous contributions to the hymnody of the Paris 'Neo-Gallican' breviaries of 1680 and 1736, but I have not discovered that Laudibus cives was one of them. My hypothesis is that he provided it for the Cistercian Breviary revised in that century by Claude Vaussin, Minister General, and that it thence made its way into the current Monastic Rite. Or perhaps the Cluniac Breviary of 1685 was the source. Erudite readers who know better are urged to correct or supplement this account.
'Santolinus', having been buried at Dijon, was moved later to his Abbey of S Victor. When that Abbey was destroyed during the Troubles of the 1790s, the body was transferred to the church of S Nicolas du Chardonnet, where, according to Wikipaedia, it is buried in the Chapel of the Holy Spirit. I have not been able to discover in Wikipaedia the text of the Latin epitaph composed by the great (if Jansenist) Hellenist Rollin.
I don't know if current Roman Catholic hymnody is much influenced by the oeuvre of 'Santolinus'; he was quite popular in the Anglo-Catholic rediscovery of Latin hymnody, and he has three translations in the English Hymnal. They include the still popular Disposer supreme ...