I'm having a spasm of playing as Roosevelt (the traits and UB suit my style) but I always individualise games by using different names. So far my American leaders have been Dwight, Hiram, Homer and Cletus, none of which have to my knowledge been used here in England. Further suggestions from transatlantic players would be welcome.
It's been a while since I played as the Mongols, but I have a whole string of names ready for when I do so again. Korsai Khan, Yubetai Khan, Shurai Khan, Iffai Khan, Mebiyai Khan . . .