Identifying these chips is really difficult because high resolution pictures are not available. I believe the part numbers of those isolation chips I gave are correct (except for U34, I can't be sure if it's ISO7761, ISO7762, or ISO7763).
There are four chips I can't identify them, my guess is:
U19 and U27 are level shifters.
U11 is a level shifter or transceiver.
U40 should be an op-amp for differential to single-ended conversion.