Hey there,
I would suggest that you stream your cities. There are a variety of different guides floating around on how to stream your cities. For instance, if you have a ls city you would not want the same build as a horse nuke city.
Depending on your play style you need to build your cities to suit the way you play. For instance, i could say how i build my cities but another player will disagree.
Muck around with it and find out what works for you. E.g, in navy cities have a lv1 barracks etc. It also depends on whether you play conquest/revolt as to whether you build walls or anything else.
The best advice would be to find your own builds that work for you and then adjust them accordingly. You will remember your city builds by memory once you have got it sorted