Cleary gives a (or part of, I forget) "Ming dynasty distillation" of ch. 39 where he often gives the symbolic meanings. For example:
The names of the teachers and their abodes—people holy and ordinary, spirits, royalty, mendicants, lay people, non-Buddhists, humans, celestials, males and females—represent certain principles.
Furthermore, the South, the direction of Sudhana's pilgrimage, is used to stand for truth, clarity, and openness. When you arrive at open, clear, true knowledge without subjectivity, then everywhere is the South.
Therefore Manjushri sent Sudhana south to call on spiritual friends and benefactors, each of whom sends him onwards that he may progress and not dawdle over past learning. This is why the friends always praise the virtues of those Sudhana has yet to meet.
In the realm of principle, Manjushri stands for knowledge of the fundamental. Samantabhadra stands for knowledge of differentiation, and Maitreya stands for the uncreate realization within Manjushri and Samantabhadra.
Li Tungxuan does this for each of the 53 stages in ch. 39 - so I think if his full commentary were translated, it would help many Buddhists greatly in their understanding of the Avatamsaka Sutra.