1. Alexander - To The World's End [24]
2. Amanitore - Kandake of Meroe [6]
3. Catherine - Catherine's Flying Squadron [21]
4. Chandragupta - Arthashastra [24]
5. Cleopatra - Mediterranean's Bride [5]
(8-3) Only +4 gold for international trade routes is minor compared to what you can get with Mali. Also an ability that benefits other civs by giving them +2 food for their trade routes to Egypt doesn't make for a good ability.
6. Cyrus - Fall of Babylon [21]
7. Dido - Founder of Carthage [12]
8. Eleanor of Aquitaine - Court of Love [14]
9. Frederick Barbarossa - Holy Roman Empire [6]
11. Genghis Khan - Mongol Horde [21]
13. Gitarja - Exalted Goddess of the Three Worlds [23]
14. Gorgo - Thermopylae [16]
15. Harald Hardrada - Thunderbolt of the North [27]
16. Hojo Tokimune - Divine Wind [22]
17. Jadwiga - Lithuanian Union [12]
19. John Curtin - Citadel of Civilization [21]
20. Kristina - Minerva of the North [29]
23. Mansa Musa - Sahel Merchants [16]
(15+1) This is easily a top ten ability if you actually utilize it properly. It isn't hard to get a city with lots of desert tiles with which you can get over +15 additional gold per trade route. All you need is one city with lots of flat desert tiles since this utilizes the sending city, so you just need to send all your trade routes from that one city. Also the extra trade routes from golden ages means you'll have at least a few extra trade route slots throughout the game, which with this ability become super charged gold generating trade routes. Wasting your trade routes on internal trade routes to make up for the production malus makes no sense when the whole point of the Civ is to focus on gold and faith to buy most things. You'll only need internal trade routes early game when you're gold economy isn't set up yet, and you'll still have to manually produce some units to protect yourself.
24. Matthias Corvinus - Raven King [30]
25. Montezuma - Gifts for the Tlatoani [23]
29. Pericles - Surrounded by Glory [26]
33. Qin Shi Huang - The First Emperor [31]
35. Saladin - Righteousness of the Faith [17]
36. Seondeok - Hwarang [12]
37. Suleiman - Grand Vizier [21]
40. Teddy Roosevelt - Roosevelt Corollary [24]
41. Tomyris - Killer of Cyrus [23]
42. Trajan - Trajan's Column [24]
43. Victoria - Pax Britannica [17]
44. Wilfrid Laurier - The Last Best West [15]
@DWilson
I've fixed the score in my post here.