review /rəˈvyo͞o/ verb
write a critical appraisal of (a book, play, movie, etc.) for publication in a newspaper or magazine. –Google
"....and one became highly acclaimed and reviewed, but was 'kept a secret' because of the colour of his skin…."
was reviewed (extensively)
was subject to review (at length)
highly acclaimed upon review / reviewed with high acclaim
Those reviews could then, themselves, be further dissected.
dissect /dəˈsekt,dīˈsekt/ verb
analyze (something) in minute detail. "novels that dissect our obsession with cities and urban angst" –Google
and was dissected at length...
was extensively dissected...
was subject to extensive dissection...
Here's the next runner up:
exposition (ˌɛk spəˈzɪʃ ən) noun
- a detailed statement or explanation; explanatory treatise. –TFD
Even when his work was subjected to such high acclaim in its reviews (ones that had dissected it so well, that they themselves became expositions), still he felt it necessary to use a pseudonym.