who can know (other than you)? —

one whose nature cannot be known by others (who are not under the shadow of his divine mercy) —

other than me, no one else knows about you —

 others- wives —

 there is none beyond you —

women (who are married to others) —

not glorified by others —

 others- wealth —

 atheists —

āthmā, which is the possession of distinguished emperumān —

rishis (sages), manushyas (humans) et al —

others —

others (who lack devotion towards bhagavān) —

any other —

for those others (who lack devotion) —

he is the most famous antharyāmi (indwelling soul) for all the others —

 for lowly people —

for the other dhĕvathās (who follow the orders of such brahmā and rudhra) —

 for the humans —

 needed for others —