Hebbar
Hebbar Iyengars are followers of Ramanuja's philosophy preaching Vishishtadvaita. They are mainly from Mysore, Bangalore and the sorrounding places in southern Karnataka. The etymology of Hebbar, in Kannada, resolves to "hebbu/hiridhu" (meaning big) + "haruva" (meaning brahmin). They speak a charecteristic dialect called "Hebbar Tamil" influenced by Tamil and Kannada.
An excellent analysis on Hebbar Tamil dialect has been done here
The sect has good number of contributors to various fields including Literature, Carnatic music, Science and Technology.