See https://git-scm.com/docs/git-shortlog#_mapping_authors
Makes for a prettier commit overview:
$ git shortlog -s -n --no-merges
1673 Juan Linietsky
696 Rémi Verschelde
239 volzhs
225 Andreas Haas
209 Ignacio Etcheverry
164 Daniel J. Ramirez
164 Pedro J. Estébanez
153 George Marques
150 Paul Batty
129 Poommetee Ketson
122 Franklin Sobrinho
120 marynate
115 Bojidar Marinov
107 Leon Krause
96 Thomas Herzog
...
