There is a variant with 3 cities NC(4th one after NC just in time when Tradition is completed for a fast boost) that you can use and then claim only 1x500 for a settler instead of 2. I really like a 2 scouts opener when playing pangea types of map. The extra scout can gain more from earlier civs and cs encountered letting you a better chance to rush buy an extra settler or worker if you think that you have time for a 4th city pre-NC. Of course you can always build 2 from your own if your capital is very productive! There is nothing pre built. Some maps offer better chances to put 4 cities right away and sometimes you should stick with only 2 before tempting anything else more ''flashy''.