Representative authors of hymns and readings include: Gerard Manley Hopkins, John Donne, Fyodor Dostoyevsky, Graham Greene, John Masefield, e.e. cummings, John Milton, Thomas Merton, Pierre Teilhard de Chardin, Dag Hammarskjold, T. S. Eliot, Eleanor Farjeon, William Shakespeare, Elinor Wylie ...
If you have not found the Liturgy of the Hours prayerful, consider this volume as an alternative. It is an excellent volume.