Best shoes for nearly flat arches, narrow-med width and not overweight

[Girlygirl1]

I've read a lot of posts about finding the best shoes and I realized that people who have wide feet or high arches or carry excess weight are likely going to recommend shoes that are very different than someone like myself (who has nearly flat arches and a fairly narrow foot and only about 5-10lbs extra weight) might recommend. Soooo - I thought I'd get specific and see if I can find some recommendations from women who may have similar issues. Oh! And weak ankles! Ugh! I tend to roll my ankles if I dont have the right shoes on, too.

A little more info that *may* help me find the right shoes --> I am over 40, just starting my clinicals, NOT used to being on my feet all day (do you ever get used to that?). Our shoes have to be all white and fully closed. Thank you all so much for any help you can give me!