Open up the units file with Excel, autofit the columns and look in the L column;
Ruler ID troop advantage
Label
Some Leaders are given discounts on various troops or buildings.

It shows the complete list.

For English;
CulverinCrew
SerpentineCrew
Archers
Billmen
Gallowglass
Cog


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Pape you're a disgrace. - NinjaKilla
Pape has the right idea. - Sir Kuma of The Org
Papewaio is right on the money. - Nelson
True Pape, so very True. - Barocca
Pape has it right./ As usual. - Minamoto Yoritomo / Sjakihata Akechi