I have mostly Norman Archers and Horse Archers from the castle in beta, and then 100 Teutonic Knights and 100 Knight Templars and 700 Barbarians.
If you do get stuff from the Obelisk, I would choose Barbarians. They are pretty cheap to make, with a nice attack/defense, and they dont slow anything down...unless you just have scouts or knights or horsemen in your army...
Royals are extemely slow. I am not going to kill em off, but if they die, I am not making more of them. Same with Highwaymen. Highwaymen are too expensive for 6 Glory Points. Id rather make Knight Templars than Highwaymen...