These 15 people (attached) discovered more bright NGC and IC objects than anyone else.
Galaxies fainter than magnitude 13 are not included.
The 4 foremost visual discoverers of NGC and IC objects were
William Herschel mainly from Slough near London
John Herschel from Slough and Capetown
James Dunlop from Parramatta, NSW and
Lewis Swift from Rochester NY and from just north of Los Angeles.
The attached data is from Wolfgang Steinicke
http://www.klima-luft.de/steinicke/ngcic/ngcic_e.htm
The names highlighted in yellow are southern observers.
The largest numbers in each column are also highlighted.